Apps That Work With WHOOP (2026): Every Integration and What Syncs

“Works with WHOOP” can mean six different things. An app can read what WHOOP writes to Apple Health or Android’s Health Connect, it can be one of WHOOP’s direct partners, it can pick up your workouts through Strava, it can connect through the WHOOP API, or it can simply listen to your live heart rate over Bluetooth. Each route carries different data, and the route decides whether an app ever sees your HRV or your Recovery score.

The short answer: 12 partner apps plus Apple Health and Health Connect; Recovery reaches Strava, Zwift and Cronometer, and Strain reaches Strava and Zwift, but neither score is on WHOOP’s Apple Health or Health Connect export list.^123456789

Every integration, data type and price below was checked on 2 November 2026 against WHOOP’s support articles, developer docs, partner pages and PubMed. SensAI makes a competing training app that reads WHOOP data through Apple Health, so we say where other apps get more from your WHOOP than SensAI does.

What apps work with WHOOP? The short answer

WHOOP connects to other apps six ways: Apple Health on iPhone, Health Connect on Android, 12 direct partner links, Strava as a hub, the WHOOP API v2 and live Heart Rate Broadcast. Apple Health gets sleep, heart rate and workouts but not HRV or Recovery. Partners such as Zwift, Strava and Cronometer do get your Recovery score.^895671011

Route	Who uses it	What WHOOP data crosses	Tier / hardware limits
Apple Health (iPhone)	Any iOS app that reads Apple Health, including SensAI and Hyperice81213	Workouts, active energy, heart rate, sleep, resting heart rate, respiratory rate, blood oxygen, steps (if enabled). No HRV, Recovery or Strain8	No tier gating in WHOOP’s article; iOS only8
Health Connect (Android)	Android apps that read Health Connect9	Exercise, calories, steps, sleep, resting heart rate, respiratory rate, blood oxygen. No HRV9	Resting heart rate and respiratory rate listed at WHOOP Peak9
Direct partner link	Peloton, Zwift, TrainingPeaks, Cronometer, Withings, Natural Cycles, Clue, HealthEx, pliability, FORM and others12	Depends on the partner: from body composition only (Withings, into WHOOP) to Recovery, HRV and sleep (Zwift, Cronometer14615)	Natural Cycles needs WHOOP 5.0 or MG; HealthEx is US only1617
Strava as a hub	Strava itself, plus devices and apps that post to Strava, such as Garmin and Hevy53	Activities both ways; Strava receives Activity Strain and Recovery Score5	“Available for all WHOOP members (One, Peak, Life)”5
WHOOP API v2	Developers and apps that link to your WHOOP account directly; Cronometer’s help page, for example, refers to WHOOP’s API1815	Recovery score, HRV (rMSSD), resting heart rate, SpO2, skin temperature, sleep, Strain, workouts18	All tiers; WHOOP MG medical-grade data “is not accessible via API”10
Heart Rate Broadcast	Peloton, Strava, Concept2 PM5, Zwift, Garmin Fenix, Wahoo ELEMNT, RunKeeper11	Live heart rate only, over Bluetooth Low Energy, no history11	“All WHOOP sensors”; BLE only, no ANT+11

WHOOP support articles last published between May 9, 2025 and October 28, 2026, and the WHOOP developer documentation, checked 2 November 2026.

The pattern matters more than the list. Your Recovery and Strain scores leave WHOOP through partners and Strava; neither score is on WHOOP’s Apple Health or Health Connect export list. An app that only reads those hubs can rebuild a picture from sleep and heart rate, but it cannot show your WHOOP Recovery. If you want to know what goes into that score in the first place, we break it down in how Garmin Body Battery, WHOOP Recovery and Oura Readiness are calculated.

What are the best apps to use with WHOOP?

It depends on the job. To train with WHOOP recovery data, Zwift, intervals.icu or TrainingPeaks. For nutrition, Cronometer. For fertility, Natural Cycles (WHOOP 5.0 or MG) or Clue. For body composition, Withings. For sharing workouts, Strava. For mobility, pliability; for swimming, FORM. On iPhone, SensAI adapts sessions to sleep and heart rate, without WHOOP’s HRV or Recovery.^{6192015162114522212}

If you want to…	Best fit	What it gets from WHOOP	Cost of the app
Ride or run to your Recovery score	Zwift	Recovery score, HRV, resting heart rate, sleep stages, Day Strain, workouts; Recovery shows in Zwift Companion6	WHOOP side “at no additional cost”; Zwift’s own subscription not reviewed here6
The same idea, free, for any sport	intervals.icu	“Sleep, resting HR, HRV (rMSSD), recovery, respiration and SpO2,” with your full WHOOP history19	“Free for everyone”; optional Supporter tier $4 a month23
WHOOP sleep and HRV beside a structured plan	TrainingPeaks	Sleep, HRV and resting heart rate; Recovery Score per WHOOP, not per TrainingPeaks (see below2024)	Charts need Premium: $19.95 a month or $134.99 a year25
See how food affects recovery	Cronometer	Sleep with stages, exercise, Recovery Score, resting heart rate, HRV, SpO2, skin temperature15	WHOOP sync listed among free Basic features26
Fertility or birth control	Natural Cycles	Overnight skin temperature and sleep data16	12 months free for new users with an active WHOOP membership16
Cycle tracking	Clue	Skin temperature and sleep data21	Free 3-month Clue Plus trial for WHOOP members21
Body composition	Withings scale	Sends weight, lean body mass and body fat to WHOOP; WHOOP doesn’t send Healthspan or VO2 Max back14	Scale price not reviewed here
Share workouts with friends	Strava	Activities, heart rate, Activity Strain, Recovery Score, GPS5	WHOOP names no Strava plan requirement5
Mobility routines	pliability	“Recovery data … to personalize mobility routines”2	“WHOOP members get 1 month free”27
Swim workouts	FORM	Recovery score, which adjusts HeadCoach workouts22	HeadCoach workouts are a Premium feature22
Medical records in WHOOP (US)	HealthEx	Sends conditions, medications and lab results to WHOOP17	“Included as part of your WHOOP membership at no additional cost”17
An iPhone coach that adapts to sleep and heart rate	SensAI	Sleep, heart rate, resting heart rate, workouts and workout calories via Apple Health; no HRV, Recovery or Strain12	Not reviewed here

Each app’s own page and WHOOP’s support articles, checked 2 November 2026. Natural Cycles also needs a WHOOP 5.0 or MG device; HealthEx is for US members only.¹⁶¹⁷

Notice where the Recovery score ends up. Zwift, intervals.icu, Cronometer, Strava and FORM all receive it. SensAI, which reads Apple Health, does not.^6191552212

WHOOP’s official integrations: the full 2026 list

WHOOP’s official integrations, as of November 2026, are 12 partner apps: Peloton, Zwift, Strava, TrainingPeaks, Cronometer, Withings, Natural Cycles, Clue Plus, HealthEx, Hyperice, pliability and FORM. Add Apple Health, Android Health Connect and the WHOOP Developer Platform. Ten partners have a WHOOP support article, including Zwift (October 20, 2026); pliability and FORM are announced on whoop.com.^1237134

App	Direction	What crosses	Limits	WHOOP source date
Peloton	Both, as two separate connections	Into WHOOP: class name, instructor, distance, output, cadence, resistance, speed, pace, elevation. To Peloton: WHOOP activities and WHOOP heart rate. Peloton’s own heart rate is not imported28	Needs a Peloton account, not Peloton equipment; no retroactive import28	Oct 28, 2026
Zwift	Both	Into WHOOP: rides and runs with power and cadence. To Zwift: Recovery score, HRV, resting heart rate, sleep stages, Day Strain, workouts, body measurements6	“Works everywhere Zwift operates”; all WHOOP tiers6	Oct 20, 20264
Strava	Both	Activities, heart rate, Activity Strain, Recovery Score, GPS5	No GPS for South Korea profiles; 4-day calibration first5	May 27, 2026
TrainingPeaks	WHOOP → TrainingPeaks only	Sleep times and stages, HRV, resting heart rate, Recovery Score (per WHOOP20)	“The integration is one-way only”20	Oct 6, 2025
Cronometer	WHOOP → Cronometer	Sleep Score, Recovery, resting heart rate, HRV, SpO2, skin temperature, exercises7	“Synced daily, typically after your last night’s sleep is processed”7	May 9, 2025
Withings	Withings → WHOOP	Weight, lean body mass %, body fat %14	WHOOP doesn’t send Healthspan data or VO2 Max to Withings; Health Connect not needed on Android14	Oct 6, 2025
Natural Cycles	WHOOP → Natural Cycles	Overnight skin temperature, sleep data16	WHOOP 5.0 or MG only; 18+; about 37 countries16	Aug 25, 2026
Clue Plus	WHOOP → Clue	Skin temperature, sleep data21	Free 3-month trial for WHOOP members21	Feb 13, 2026
HealthEx	HealthEx → WHOOP	Conditions, medications, lab results17	“U.S.-based members only”; 18+17	May 28, 2026
Hyperice	Both, via Apple Health	WHOOP activity, sleep and recovery data to Hyperice; Hypervolt and Normatec sessions logged in WHOOP13	“Currently iOS-only”13	May 20, 2025
pliability	WHOOP → pliability	Recovery data for mobility routines2	1 month free for WHOOP members27	whoop.com, undated
FORM (swim goggles)	WHOOP → FORM	Recovery score, “imported to FORM each day”22	HeadCoach is Premium22	Aug 26, 2026 (What’s new)

WHOOP support articles, the whoop.com integrations page, the WHOOP Locker and partner help pages, checked 2 November 2026. The support topic has a “Load more” button, so WHOOP’s first page is not the full list.¹

Heart Rate Broadcast sits apart from all of these. It is not a data sync: “All WHOOP sensors can broadcast your real-time heart rate to compatible fitness devices and apps via Bluetooth Low Energy (BLE),” with no history, and only one broadcast-enabled device at a time.¹¹

Cycling is where the 2026 additions land. WHOOP says “48% of Cycling/Spin sessions” on WHOOP are already “imported from a connected app or device.”²⁹ Announcing the Peloton and Zwift links on October 28, 2026, Ed Baker, Chief Product Officer at WHOOP, said: “These integrations make it easier for members to connect their WHOOP insights with the ways they already train, so they can make more informed decisions about their health and performance every day.”²⁹

Zwift’s own help page states the practical point plainly: “Whoop shares your recovery score with Zwift. Zwift uses your recovery score to adapt your personalized recommendations.”³⁰

What does WHOOP send to Apple Health, and what stays behind?

WHOOP sends workouts, active energy, heart rate, sleep, resting heart rate, respiratory rate, blood oxygen and, if enabled, steps to Apple Health. It does not send HRV, its Recovery or Strain scores, meditation and stretching sessions, or WHOOP MG’s ECG and Blood Pressure Insights. It imports workouts, routes, mindful minutes, weight, nutrition and cycle data.⁸

Data	WHOOP → Apple Health	Apple Health → WHOOP
Workouts	✅ Auto-detected activities	✅
Workout routes (GPS)	—	✅
Active energy	✅	✅
Heart rate	✅ During sleep and activities	✅
Sleep	✅	—
Resting heart rate	✅	—
Respiratory rate	✅	—
Blood oxygen (SpO2)	✅	—
Steps	✅ If enabled in WHOOP settings	—
Distance, mindful minutes, weight and height	—	✅
Nutrition	—	✅ Auto-logged into the WHOOP Journal
Menstrual cycle	—	✅ From Apple Health, Flo, Cycle Tracking or Clue
HRV	❌ Not exported “at this time”	—
Recovery and Strain scores	❌ Not on the export list	—
Recovery activities (meditation, stretching)	❌ “Not exported”	—
ECG, Blood Pressure Insights (WHOOP MG)	❌ “Due to regulatory limitations”	—

WHOOP, “Apple Health Integration,” last published April 16, 2026: the “Exported” and “Imported” lists. ❌ = stated as not exported, or absent from WHOOP’s export list.⁸

That list matches SensAI’s Help Center, which says WHOOP writes “sleep, resting heart rate, respiratory rate, blood oxygen, workouts, and workout calories,” that it “explicitly does not write HRV,” and that “Recovery and Strain scores stay in WHOOP.”¹² WHOOP’s own wording for calories is “Active Energy,” and its list also includes heart rate samples and steps.⁸

One setting trips people up. “If both import and export are enabled for WHOOP, this can increase the likelihood of duplicate entries,” so WHOOP suggests turning off Workouts export if you see doubles.⁸ For the same table across Oura, WHOOP and Garmin, see what syncs from Oura, WHOOP and Garmin to Apple Health.

Why doesn’t WHOOP send HRV to Apple Health?

Because the two store different HRV measures. WHOOP says “Apple Health uses SDNN (Standard Deviation of Normal-to-Normal) for HRV, while WHOOP calculates RMSSD (root mean square of successive differences),” and “WHOOP does not export HRV data to Apple Health at this time.” So no app that only reads Apple Health sees your WHOOP HRV.⁸

Think of a 100-metre split and a mile time. Both describe speed, but you cannot turn one into the other. rMSSD and SDNN are both HRV, and they are not interchangeable either.

The practical result: to use WHOOP HRV in another app, that app needs a partner link or a direct account connection, such as Zwift, Cronometer or intervals.icu.⁶¹⁵¹⁹ We compare the HRV-specific apps in the best HRV apps that work with Oura Ring and WHOOP.

Does WHOOP work with Android Health Connect?

Yes, both ways. WHOOP writes exercise, calories, steps, sleep, resting heart rate, respiratory rate and blood oxygen to Health Connect, and reads exercise, distance, calories, weight, height, body fat and lean body mass. HRV is not on its export list, and WHOOP lists resting heart rate and respiratory rate as WHOOP Peak-level Health Connect data.⁹

WHOOP’s article, last published October 6, 2025, describes the tiers this way: “WHOOP One: Sleep, Strain, Recovery, and body metrics sync with Health Connect,” and “WHOOP Peak: Adds Health Monitor data, including Resting Heart Rate and Respiratory Rate.”⁹ The same article’s overview lists resting heart rate among Recovery data, so the tier lines and the overview do not fully agree.⁹

Some data never goes to Health Connect on any tier: “WHOOP does not sync Heart Screener data, Blood Pressure Insights, WHOOP Age, Pace of Aging, and VO2 Max to Health Connect.”⁹ The article gives no reason for leaving out HRV.

If you reinstall the app, reconnect: “Android automatically removes permissions during app uninstallation.”⁹

Does WHOOP work with Strava?

Yes, both ways, and Strava gets more than Apple Health does. WHOOP sends activity type, elapsed time, calories, heart rate, Activity Strain, Recovery Score and GPS (when tracked) to Strava, and imports Strava activities automatically. Since May 2026, Garmin and Hevy activities that pass through Strava arrive in WHOOP with source attribution.⁵³

WHOOP’s Strava article, last published May 27, 2026, says the link is “available for all WHOOP members (One, Peak, Life)” and works with WHOOP 4.0, 5.0 and MG.⁵ You pick how the post looks: “Heart Rate Graph, Strain View, or Training State View.”⁵

Three rules decide what posts. “WHOOP only posts classified activities to Strava.” GPS workouts upload automatically when “Track Route” is on. And to stop loops, “WHOOP does not export activities to Strava if the activity was imported from Strava via Apple Health or Google Health Connect.”⁵

The May 21, 2026 upgrade made Strava a real hub. Imports now carry “GPS, distance, pace/speed,” “power and cadence when the original device captured them,” and “exercises with sets, reps, and weights,” with labels such as “Garmin Via Strava.”³ When two records overlap, “WHOOP keeps the version with the richer data. No duplicates.”³

What never goes to Strava: “WHOOP Age, Pace of Aging, ECG, and Blood Pressure Insights.”⁵ For the device-by-device view from Strava’s side, see what syncs with Strava in 2026.

Does WHOOP work with TrainingPeaks?

Yes, one way: WHOOP sends sleep, HRV and resting heart rate to TrainingPeaks, never the reverse. The two companies disagree on the Recovery Score: WHOOP’s October 2025 article lists it, while TrainingPeaks’ May 2023 page says it does not import Recovery or Strain. Workouts don’t sync, old data doesn’t backfill, and charts need TrainingPeaks Premium.²⁰²⁴²⁵

WHOOP’s TrainingPeaks article lists hours slept, REM, deep and light sleep time, times woken, time awake, HRV, resting heart rate and Recovery Score, and answers the obvious question with “No, the integration is one-way only.”²⁰

TrainingPeaks’ own help page says something narrower: “We do not currently import Whoop proprietary metrics like Strain, Recovery, or Sleep performance,” and “Whoop does not send workouts to TrainingPeaks.”²⁴ It adds that “the WHOOP>Trainingpeaks sync is not historical.”²⁴ Neither page says which technical route the link uses.

The dashboard charts and the Performance Management Chart overlay need TrainingPeaks Premium, $19.95 a month or $134.99 a year.²⁵ If you see several sleep entries for one night, WHOOP explains that it “updates your sleep data whenever a new sleep session is recorded or recalculated.”²⁰

Which third-party apps read WHOOP through the WHOOP API?

The WHOOP API v2, launched 1 July 2025, gives developers Recovery score, HRV (rMSSD), resting heart rate, SpO2, sleep, Strain and workouts through OAuth 2.0, with default limits of 100 requests a minute and 10,000 a day. Of the apps below, only Cronometer’s help mentions WHOOP’s API; the others don’t say which technical route they use.^31183215

API fact	Detail
Current version	v2, launched 2025-07-01. “The v1 API is no longer supported”; no hard v1 shutdown date is published3133
Data scopes	read:recovery (“score, heart rate variability, and resting heart rate”), read:cycles, read:workout, read:sleep, read:profile, read:body_measurement, plus offline for refresh tokens1834
HRV field	hrv_rmssd_milli on each recovery record, beside recovery_score, spo2_percentage and skin_temp_celsius18
Rate limits	Defaults of “100 requests per minute” and “10,000 requests per day”; increases can be requested32
Small and personal apps	“Every new app starts on the Sandbox tier, which allows up to 10 WHOOP members to connect”; more than 10 needs approval3510
Memberships	“Compatible with all WHOOP memberships (One, Peak, Life)” and WHOOP 4.0, 5.0 and MG10
Exclusion	“Medical-grade data from WHOOP MG is not accessible via API”10
Latest change	September 23, 2026: cycles now include step_count31

WHOOP developer documentation and “The WHOOP Developer Platform” support article (last published August 31, 2026), checked 2 November 2026.

WHOOP doesn’t say which partners use its public API. Among the apps below, only Cronometer’s help page mentions it, explaining that it cannot pull general activity data “since their API for this data is not available at this time.”¹⁵ The others describe a direct link to your WHOOP account without saying how it works, and Lifestack’s blog says only that it reads WHOOP data. So read the table as what each app says it gets, not as a list of API apps.

App	What it says it reads from WHOOP	Caveats
intervals.icu	“Sleep, resting HR, HRV (rMSSD), recovery, respiration and SpO2”; “your complete history with Whoop is synced when you connect”19	Free23; not on WHOOP’s partner list12
Cronometer	“Sleep duration (with sleep stages), Exercise, Recovery Score, Resting Heart Rate, Heart Rate Variability, Oxygen saturation (SpO2), Skin temperature”15	“We are not able to pull general activity data from WHOOP”15
Zwift	Recovery score, HRV, resting heart rate, sleep, Strain, workouts630	Rides and runs go back into WHOOP6
FORM	Recovery score, daily22	HeadCoach is Premium22
pliability	Recovery data2	1 month free for WHOOP members27
Lifestack	“Reads recovery, sleep, HRV, and strain data from WHOOP,” per its own blog36	Self-described; doesn’t say how it connects; not on WHOOP’s list12

Each app’s own page, checked 2 November 2026.

One app is often listed here by mistake. Welltory does not pull from your WHOOP account; it uses WHOOP 4.0 or 5.0 as a Bluetooth heart-rate monitor, with HRV “Yes” and activity tracking “No” in its compatibility table.³⁷

Do you need a WHOOP membership to use other apps?

Yes. Every route depends on WHOOP collecting data, and “once your membership has ended, WHOOP will no longer collect, upload, or analyze your biometric data.” In the US, WHOOP One costs $199 a year, Peak $239 and Life $359. Most integrations work on all three; Natural Cycles needs a 5.0 or MG device and HealthEx is US-only.^38391617

	WHOOP One	WHOOP Peak	WHOOP Life
US price	$199 a year	$239 a year	$359 a year
Hardware	WHOOP 5.0	WHOOP 5.0	WHOOP MG
Apple Health, Strava, Zwift, TrainingPeaks, Withings, Hyperice, API	✅	✅	✅
Health Connect resting heart rate and respiratory rate	Not listed	✅	✅
Natural Cycles	✅ (5.0)	✅ (5.0)	✅ (MG)
HealthEx (US only)	✅	✅	✅
ECG and Blood Pressure Insights to other apps	—	—	❌ Not to Apple Health, Health Connect, Strava or the API

WHOOP membership page and support articles, checked 2 November 2026.^{398956201413101617}

WHOOP’s membership page lists a “1-month free trial” and says plans are “HSA/FSA eligible”; it shows no monthly price.³⁹ WHOOP Life adds “Heart Screener with ECG readings” and “Blood pressure insights for wellness,” but those stay inside WHOOP.³⁹⁸⁹

The cancellation rule is the one that matters for integrations. Once collection stops, partner apps and the API have nothing new to read, even if the connections stay switched on.³⁸¹⁰

Free apps that work with WHOOP

The connections cost nothing extra; the WHOOP membership behind them does. Apple Health and Health Connect are built in, intervals.icu “is free for everyone,” Cronometer lists WHOOP sync among its free features, HealthEx is included for US members, and Clue Plus, pliability and Natural Cycles offer WHOOP members free trial periods.^{89232617212716}

App	What’s free	What it gets from WHOOP
Apple Health	Built into iPhone	Sleep, heart rate, resting heart rate, respiratory rate, blood oxygen, workouts8
Health Connect	Built into Android	Similar, without heart rate samples9
intervals.icu	“Free for everyone”; Supporter $4 a month is optional23	Sleep, resting heart rate, HRV, recovery, respiration, SpO219
Cronometer	WHOOP sync listed among free Basic features (August 202226)	Recovery Score, HRV, sleep, SpO2, skin temperature, exercise15
Strava	WHOOP’s link is open to all WHOOP members5	Activities, Strain, Recovery Score5
HealthEx	Included in WHOOP membership, US only17	Medical records into WHOOP17
Clue Plus	3-month trial for WHOOP members21	Skin temperature, sleep21
pliability	1 month free for WHOOP members27	Recovery data2
Natural Cycles	12 months free for new users with an active WHOOP membership16	Skin temperature, sleep16

Each app’s own page and WHOOP’s support articles, checked 2 November 2026.

For a free training log that keeps your WHOOP Recovery and HRV, intervals.icu is the one to know. It is free and syncs your full WHOOP history when you connect, though WHOOP doesn’t list it as a partner.²³¹⁹

Does WHOOP work with MyFitnessPal, Garmin or Hydrow?

Not directly. MyFitnessPal, Garmin Connect, Hydrow, Oura and glucose monitors such as Dexcom Stelo or Abbott Lingo have no direct WHOOP integration that we found. Nutrition apps can feed WHOOP’s Journal through Apple Health, Garmin activities reach WHOOP via Strava, and Hydrow treats WHOOP 3.0 or 4.0 only as a heart-rate monitor.¹²⁸³⁴⁰

App	Direct WHOOP link?	What works instead
MyFitnessPal	No	On iPhone, Apple Health “Auto-Log Nutrition” syncs nutrition “into the WHOOP Journal”8
Garmin Connect	No	Garmin activities reach WHOOP through Strava (“Garmin Via Strava”), and WHOOP can broadcast live heart rate to a Garmin Fenix311
Hevy	No WHOOP article	Lifts logged in Hevy arrive through Strava, with sets, reps and weights3
Hydrow	No software link	WHOOP Strap 3.0 and 4.0 work as heart-rate monitors via the WHOOP app; Hydrow lists WHOOP Strap 5.0 as incompatible40
Oura	No integration found	None in WHOOP’s lists12
Glucose monitors (Stelo, Lingo)	No integration found	None in WHOOP’s lists12
Calm, Headspace	No integration found	WHOOP imports Mindful Minutes from Apple Health, so any app that writes them there feeds WHOOP8

WHOOP’s support topic, whoop.com integrations page, WHOOP “What’s new” and Hydrow’s heart-rate monitor list, checked 2 November 2026.

If you also own an Oura Ring, our sibling guide covers the other side: apps that work with Oura Ring.

How accurate is the WHOOP data these apps receive?

Good for heart rate, sleep timing and overnight trends, weaker for sleep stages. An independent 2025 ECG study rated WHOOP 4.0 overnight HRV at a concordance of 0.94 (Oura Gen4: 0.99), and polysomnography studies put WHOOP’s sleep-versus-wake agreement at 86–89%. Most early validations came from WHOOP-funded or WHOOP-supported labs.^41424344

Study	WHOOP generation	Reference	n	Result	Funding / COI
Miller et al., J Sports Sci 202042	Not stated	Polysomnography	12 adults, 86 sleeps	Sleep vs wake 89% (κ 0.49); four stages 64% (κ 0.47); total sleep +8.2 min. Sleeps “scored by the company”	No COI statement on PubMed; same lab later WHOOP-sponsored
Berryhill et al., J Clin Sleep Med 202045	Not stated	Polysomnography, ECG, inductance plethysmography	32	Sleep duration bias 13.8 min; heart rate bias −0.17%; respiratory rate bias 1.8%	“Funded by a grant to the University of Arizona from WHOOP Inc.”
Bellenger et al., Sensors 202146	2.0	ECG	15 opportunities	Heart rate bias ≤0.39%; lnRMSSD bias 1.66%, limits ±5.93%, which “approached or exceeded” the smallest worthwhile change	Co-author’s position later WHOOP-sponsored, after data collection
Miller et al., Biosensors 202143	2.0	Polysomnography	6 adults, 54 sleeps	Auto-detected sleep: sleep vs wake 86%, four stages 63%; deep sleep underestimated 15.5 min	Same disclosure
Miller et al., Sensors 202244	3.0	Polysomnography, ECG	53	Sleep vs wake 86% (κ 0.44); multi-stage 60% (κ 0.44), vs Oura 61% and Apple Watch 53%	Lab receives WHOOP support; WHOOP “not involved in the design, conduct or reporting”
Dial et al., Physiol Rep 202541	4.0	ECG	13 adults, 536 nights	Resting HR CCC 0.91 (MAPE 3.00%); HRV CCC 0.94 (MAPE 8.17%); Oura Gen4 HRV 0.99	“No competing interests”
Schyvens et al., Sleep Adv 202547	4.0	Polysomnography	62 (40 wore WHOOP)	All six devices caught >90% of sleep but 29–52% of wake; WHOOP κ 0.37, fair (Apple Watch S8 0.53)	“No financial arrangements or affiliations” (full text); Belgian academic group
Van Oost et al., Sensors 202548	4.0	12-lead ECG	Not stated in abstract	Heart rate acceptable at steady state, “less accurate during transitions”	“No conflicts of interest”

All studies verified on PubMed, 2 November 2026. CCC = Lin’s concordance correlation coefficient; MAPE = mean absolute percentage error; κ = Cohen’s kappa.

The early work came mostly from Central Queensland University’s Appleton Institute. Dean J. Miller, first author of the 2020 sleep study, concluded that “in situations where polysomnography is impractical (e.g., field settings), WHOOP is a reasonable method for estimating sleep, particularly for 2-stage categorisation, if accurate bedtimes are manually entered.”⁴² His 2021 papers disclose that his research position became WHOOP-sponsored after the data for those studies were collected.⁴⁶⁴³

The independent 2025 studies broadly agree. Michael B. Dial and colleagues at The Ohio State University’s Human Performance Collaborative, declaring no competing interests, found that “Oura devices showed the highest agreement for RHR and HRV, and WHOOP showed acceptable agreement, whereas Garmin Fenix and Polar demonstrated lower concordance.”⁴¹ One detail matters for the apps above: their full text notes WHOOP’s HRV is “dynamically weighted” toward the last slow-wave sleep, while the study compared all-night averages.⁴¹

Sleep stages are the weak spot across brands. An-Marie Schyvens of the University of Antwerp, who led the 2025 polysomnography comparison, wrote that “all devices can benefit from further improvement for multistate categorization.”⁴⁷

Two gaps remain. Respiratory rate was validated in a WHOOP-funded study (bias 1.8%).⁴⁵ And we found no peer-reviewed validation of WHOOP’s blood oxygen (SpO2) against a reference on PubMed, so treat the SpO2 that Apple Health, Health Connect and the API receive as unvalidated. For the cross-brand HRV evidence, see wearable HRV accuracy validation studies.

Should one night’s HRV change your training?

Not on its own. In 11 Olympic water polo players wearing WHOOP 3.0 for 16 weeks, WHOOP-derived HRV (lnRMSSD) varied by about 5.4% from day to day within a week, which the authors call no more than HRV’s natural variation. A one-night swing of that size is normal; judge the trend.⁴⁹

That study came from a WHOOP-supported lab, and its authors state WHOOP “was not involved in the design, conduct or reporting.”⁴⁹ Their 2021 ECG comparison adds the other half: WHOOP’s HRV error “approached or exceeded” the smallest change worth acting on.⁴⁶

So whichever app receives your WHOOP HRV, Zwift, Cronometer or intervals.icu, read it as a rolling average rather than a verdict on one morning.

Where does SensAI fit?

SensAI is an iPhone coaching app that reads WHOOP only through Apple Health; there is no WHOOP account link. It reads the sleep, heart rate, resting heart rate, workouts and workout calories WHOOP writes there, but not HRV, Recovery or Strain. Zwift, intervals.icu, Cronometer and Strava all get WHOOP’s Recovery score; SensAI does not.^12619155

Asked whether you link your WHOOP account inside SensAI, the Help Center answers: “No. Connect the device’s app to Apple Health, then let SensAI read Apple Health.”¹² WHOOP’s HRV stays out because “WHOOP calculates HRV as rMSSD while Apple Health stores SDNN, and the two are not interchangeable.”¹²

What SensAI does with what it gets: “Sleep and overnight heart rate from your device shape how hard Coach asks you to push on a given day,” and your WHOOP workouts sit in the Activity tab next to your planned strength sessions, so Coach sees them as load.¹² It syncs roughly the last 30 days of Apple Health workouts.¹²

The limit is plain. “Will Coach see my HRV? Only from Apple Watch.”¹² With WHOOP alone, SensAI’s HRV tile reads “No recent value,” and your Recovery score never arrives.¹²

Data also flows the other way. SensAI writes the strength workouts you track to Apple Health, and WHOOP imports Apple Health workouts.¹²⁸

To set it up, follow how to connect a wearable to SensAI through Apple Health.

Why isn’t WHOOP syncing with my other apps?

Usually the WHOOP app hasn’t synced or a permission is off. WHOOP’s own fixes: keep the app running in the background, turn off Low Power Mode or Battery Saver, re-enable Apple Health or Health Connect after a reinstall, and check read permissions. Strava needs the 4-day calibration done first, and Peloton never imports old classes.^5089528

Symptom	WHOOP’s documented cause or fix	Source
WHOOP app not updating	Bluetooth on; “Device Settings > Sync Now”; forget and re-pair; update firmware	WHOOP app errors article50
Slow sync or gaps	“Keep your WHOOP app running the background”; “Disable Low Power Mode or Battery Saver”	WHOOP app errors article50
Apple Health workouts not in WHOOP	“Ensure ‘read’ permissions for WHOOP are enabled in Apple Health”; refresh the WHOOP app	WHOOP Apple Health article8
Duplicate workouts	Import and export both on; disable “Workouts” export	WHOOP Apple Health article8
Integration gone after reinstall	iOS: re-enable in Apple Health. Android: permissions are removed on uninstall	WHOOP Apple Health and Health Connect articles89
Nutrition not auto-logging	Let the app write to Apple Health; open it before saving your WHOOP Journal	WHOOP Apple Health article8
Strava error on connect	Finish the 4-day calibration and unlock Strain Target; on Android, enable “Open Supported Links”	WHOOP Strava article5
No heart rate on Strava	Strava > Settings > Data Permissions > “Health-Related Data > Access Allowed”	WHOOP Strava article5
Activity not posted to Strava	“WHOOP only posts classified activities to Strava”	WHOOP Strava article5
Peloton class missing	Syncs “within approximately 1 minute”; old classes “are not imported retroactively”	WHOOP Peloton article28
Nothing old in TrainingPeaks	“The WHOOP>Trainingpeaks sync is not historical”; turn calendar metrics on	TrainingPeaks help24
Cronometer not importing	Check WHOOP has your data, refresh the diary, reconnect	Cronometer help15
Heart Rate Broadcast drops	May toggle off after updates; pair one broadcast device at a time	WHOOP Heart Rate Broadcast article11

If the app you’re fixing is SensAI, its Help Center lists what to check: connect a wearable to SensAI through Apple Health.

Frequently asked questions

What apps work with WHOOP?

WHOOP’s partners include Peloton, Zwift, Strava, TrainingPeaks, Cronometer, Withings, Natural Cycles, Clue Plus, HealthEx, Hyperice, pliability and FORM. Any app that reads Apple Health or Health Connect also gets part of your WHOOP data, and apps such as intervals.icu link to your WHOOP account directly.¹²³¹⁹

Are there free apps that work with WHOOP?

Yes, but each needs an active WHOOP membership behind it. Apple Health, Health Connect and intervals.icu are free, Cronometer lists WHOOP sync among its free features, HealthEx is included for US members, and Clue Plus, pliability and Natural Cycles have free trial periods for WHOOP members.^232617212716

Does WHOOP sync HRV to Apple Health?

No. “WHOOP does not export HRV data to Apple Health at this time,” because Apple Health stores SDNN and WHOOP calculates rMSSD. Recovery and Strain scores aren’t exported either. HRV is also missing from WHOOP’s Health Connect export list.⁸⁹

Does WHOOP work with MyFitnessPal?

Not directly. On iPhone, WHOOP’s Apple Health “Auto-Log Nutrition” lets third-party apps “automatically sync nutrition data into the WHOOP Journal,” so a nutrition app that writes to Apple Health can feed it. Cronometer is the nutrition app with a direct WHOOP link.⁸⁷

Does WHOOP work with Garmin?

Not directly. Garmin Connect is not in WHOOP’s integration lists. Garmin activities that sync to Strava reach WHOOP labelled “Garmin Via Strava,” and WHOOP keeps the richer record when two overlap. WHOOP can also broadcast live heart rate to a Garmin Fenix over Bluetooth.¹²³¹¹

Does WHOOP work with TrainingPeaks?

Yes, one way. WHOOP sends sleep, HRV and resting heart rate; WHOOP says Recovery Score too, but TrainingPeaks says it doesn’t import Recovery. No workouts, no history, and charts need TrainingPeaks Premium.²⁰²⁴²⁵

Can third-party apps access WHOOP data?

Yes, through the WHOOP API v2 with OAuth 2.0. Apps can read Recovery, HRV (rMSSD), sleep, Strain and workouts, a new app can connect up to 10 members on the Sandbox tier, and WHOOP MG medical-grade data is not available.¹⁸³⁵¹⁰

Does WHOOP work without a membership?

Not usefully. “Once your membership has ended, WHOOP will no longer collect, upload, or analyze your biometric data,” so connected apps receive nothing new. Memberships cost $199, $239 or $359 a year in the US.³⁸³⁹

Does WHOOP work with Zwift and Peloton?

Yes, both work in both directions, per WHOOP’s October 2026 articles. Zwift receives your Recovery score and sends rides and runs back; Peloton sends classes to WHOOP and receives WHOOP activities and heart rate, without needing Peloton equipment.²⁹⁶²⁸

Does WHOOP work with Hydrow?

Only as a heart-rate monitor. Hydrow lists WHOOP Strap 3.0 and 4.0 as compatible over Bluetooth via the WHOOP app, and WHOOP Strap 5.0 as incompatible.⁴⁰

The bottom line

Most apps that “work with WHOOP” only get part of it. Apple Health and Health Connect apps see sleep, resting heart rate and workouts, but WHOOP’s HRV, Recovery score and Strain score are not on either export list. Strava, Zwift, Cronometer and intervals.icu get your Recovery score. Everything stops when the membership does.^8956151938

Pick the route by what you need. For your Recovery score inside training, use Zwift or intervals.icu. For food against recovery, Cronometer. For an iPhone coach that adjusts sessions from WHOOP’s sleep and overnight heart rate, SensAI reads Apple Health, minus the HRV and scores WHOOP keeps to itself.^6191512

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References

Footnotes

1. WHOOP. “App Integrations.” WHOOP Support topic — first page lists Peloton (Oct 28, 2026), The WHOOP Developer Platform (Aug 31, 2026), Natural Cycles (Aug 25, 2026), HealthEx (May 28, 2026), Strava (May 27, 2026), Apple Health (Apr 16, 2026), Clue Plus (Feb 13, 2026), WITHINGS (Oct 6, 2025), TrainingPeaks (Oct 6, 2025), Health Connect Integration For Android (Oct 6, 2025), with a “Load more” button. Accessed November 2, 2026. https://support.whoop.com/s/topic/0TO6Q000000gQbZWAU/app-integrations?language=en_US ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹

2. WHOOP. “Integrations.” whoop.com — lists Zwift, Peloton and Natural Cycles under “Featured Integrations” and Cronometer, Pliability, HealthEx, Clue, Training Peaks and Withings under “Additional Integrations”; pliability: “Connect recovery data with Pliability to personalize mobility routines.” Accessed November 2, 2026. https://www.whoop.com/us/en/integrations/ ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵

3. WHOOP. “What’s New at WHOOP in 2026.” The Locker, updated October 7, 2026 — May 21, 2026 Strava upgrade: “GPS, distance, pace/speed”, “Power and cadence when the original device captured them”, “Exercises with sets, reps, and weights”, “a lift logged in Hevy”, “Source attribution — ‘Garmin Via Strava’ when another device routed through”, “If an activity overlaps something WHOOP already recorded, WHOOP keeps the version with the richer data. No duplicates.”; FORM integration, August 26, 2026. Accessed November 2, 2026. https://www.whoop.com/us/en/thelocker/2026-whats-new/ ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹

4. WHOOP. “Zwift Integration.” WHOOP Support, last published October 20, 2026. Accessed November 2, 2026. https://support.whoop.com/s/article/Zwift-Integration ↩ ↩² ↩³

5. WHOOP. “Strava Integration.” WHOOP Support, last published May 27, 2026 — “available for all WHOOP members (One, Peak, Life)”; exported: “Activity Type, Elapsed Time, Calories Burned, Heart Rate (HR), Activity Strain, Recovery Score, GPS Data”; “WHOOP only posts classified activities to Strava”; “WHOOP does not export activities to Strava if the activity was imported from Strava via Apple Health or Google Health Connect”; “WHOOP Age, Pace of Aging, ECG, and Blood Pressure Insights are NOT shared with Strava”; “Ensure you have completed the initial 4-day calibration and unlocked Strain Target before integrating.” Accessed November 2, 2026. https://support.whoop.com/s/article/Strava-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹ ↩²⁰ ↩²¹ ↩²² ↩²³ ↩²⁴ ↩²⁵

6. WHOOP. “WHOOP and Zwift: How the Integration Works and How to Connect.” The Locker, October 20, 2026 — “WHOOP and Zwift connect in both directions”; Zwift receives the Recovery scope (Recovery score, HRV, RHR), sleep stages, cycles (Day Strain, average heart rate), workouts, profile and body measurements; Recovery shown in Zwift Companion; “available on WHOOP One, WHOOP Peak, and WHOOP Life at no additional cost”; “works everywhere Zwift operates.” Accessed November 2, 2026. https://www.whoop.com/us/en/thelocker/whoop-and-zwift-how-the-integration-works-and-how-to-connect/ ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷

7. WHOOP. “Cronometer Integration.” WHOOP Support, last published May 9, 2025 — synced data: Sleep Score, Recovery, RHR, HRV, SpO2, skin temperature, exercises; “Data is synced daily, typically after your last night’s sleep is processed.” Accessed November 2, 2026. https://support.whoop.com/s/article/Cronometer-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶

8. WHOOP. “Apple Health Integration.” WHOOP Support, last published April 16, 2026 — “WHOOP members using on iOS can connect to Apple Health to sync”; Exported and Imported lists; “WHOOP does not export HRV data to Apple Health at this time”; “Apple Health uses SDNN (Standard Deviation of Normal-to-Normal) for HRV, while WHOOP calculates RMSSD (root mean square of successive differences)”; “WHOOP MG does not currently export ECG nor Blood Pressure Insights to Apple Health due to regulatory limitations”; “Recovery activities such as Meditation and Stretching are not exported to Apple Health”; “If both import and export are enabled for WHOOP, this can increase the likelihood of duplicate entries”; “reinstalling WHOOP requires re-enabling the integration in Apple Health.” Accessed November 2, 2026. https://support.whoop.com/s/article/Apple-Health-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹ ↩²⁰ ↩²¹ ↩²² ↩²³ ↩²⁴ ↩²⁵ ↩²⁶

9. WHOOP. “Health Connect Integration For Android.” WHOOP Support, last published October 6, 2025 — writes “Exercise (Activities), Calories, Steps, Sleep, Resting Heart Rate, Respiratory Rate, Blood Oxygen (SpO2)”; reads “Exercise (Activities), Distance, Calories, Weight, Height, Body Fat, Lean Body Mass”; “WHOOP One: Sleep, Strain, Recovery, and body metrics sync with Health Connect”; “WHOOP Peak: Adds Health Monitor data, including Resting Heart Rate and Respiratory Rate”; “WHOOP does not sync Heart Screener data, Blood Pressure Insights, WHOOP Age, Pace of Aging, and VO2 Max to Health Connect”; “Android automatically removes permissions during app uninstallation.” Accessed November 2, 2026. https://support.whoop.com/s/article/Google-Health-Integration-For-Android ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸

10. WHOOP. “The WHOOP Developer Platform.” WHOOP Support, last published August 31, 2026 — “This platform is compatible with all WHOOP memberships (One, Peak, Life) and hardware (WHOOP 4.0, WHOOP 5.0, and WHOOP MG)”; “WHOOP utilizes OAuth 2.0 authentication”; “To have more than 10 members utilize your integration, developers must submit their app for approval”; “Medical-grade data from WHOOP MG is not accessible via API.” Accessed November 2, 2026. https://support.whoop.com/s/article/The-WHOOP-Developer-Platform ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸

11. WHOOP. “Heart Rate Broadcast.” WHOOP Support, last published June 10, 2025 — “All WHOOP sensors can broadcast your real-time heart rate to compatible fitness devices and apps via Bluetooth Low Energy (BLE)”; “WHOOP uses Bluetooth Low Energy (BLE) only”; compatible examples Peloton, Strava, Concept2 PM5, Zwift, Garmin Fenix, Wahoo ELEMNT, RunKeeper; “Connect WHOOP to only one HR Broadcast-enabled device at a time”; “After app or firmware updates, HR Broadcast may toggle off.” Accessed November 2, 2026. https://support.whoop.com/s/article/Heart-Rate-Broadcast ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸

12. SensAI. “How to Connect Garmin, Oura, WHOOP, Strava, or Any Wearable to SensAI Through Apple Health.” SensAI Help Center, last updated September 25, 2026 — “Do I link my Garmin, Oura, or WHOOP account inside SensAI? No. Connect the device’s app to Apple Health, then let SensAI read Apple Health”; “WHOOP writes sleep, resting heart rate, respiratory rate, blood oxygen, workouts, and workout calories. It explicitly does not write HRV, because WHOOP calculates HRV as rMSSD while Apple Health stores SDNN, and the two are not interchangeable. Recovery and Strain scores stay in WHOOP”; “Will Coach see my HRV? Only from Apple Watch”; “Sleep and overnight heart rate from your device shape how hard Coach asks you to push on a given day”; “It syncs roughly the last 30 days of Apple Health workouts”; “SensAI writes the strength workouts you track in the app to Apple Health”; “the categories SensAI actually uses are Workouts, Heart Rate, Resting Heart Rate, Sleep, Active Energy, and, where the device offers them, Heart Rate Variability and VO2 Max.” Accessed November 2, 2026. https://www.sensai.fit/help/connect-wearable-to-sensai-apple-health ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴

13. WHOOP. “Hyperice Integration.” WHOOP Support, last published May 20, 2025 — works through Apple Health; WHOOP activity, sleep and recovery data to Hyperice; Hypervolt and Normatec sessions logged as WHOOP Recovery activities; “The Hyperice integration is currently iOS-only.” Accessed November 2, 2026. https://support.whoop.com/s/article/Hyperice-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵

14. WHOOP. “WITHINGS Integration.” WHOOP Support, last published October 6, 2025 — imports weight, lean body mass % and body fat %; “WHOOP does NOT send Healthspan data (WHOOP Age, Pace of Aging) or VO2 Max to WITHINGS”; “Google Health Connect is NOT required for Android users.” Accessed November 2, 2026. https://support.whoop.com/s/article/Withings-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶

15. Cronometer. “WHOOP.” Cronometer Support, December 16, 2025 — imports “Sleep duration (with sleep stages), Exercise, Recovery Score, Resting Heart Rate, Heart Rate Variability, Oxygen saturation (SpO2), Skin temperature (°C)”; “we are not able to pull general activity data from WHOOP since their API for this data is not available at this time”; troubleshooting: “ensure your device is importing data to your WHOOP app. Then refresh your Cronometer diary… try reconnecting.” Accessed November 2, 2026. https://support.cronometer.com/hc/en-us/articles/44189146042516-WHOOP ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵

16. WHOOP. “Natural Cycles Integration.” WHOOP Support, last published August 25, 2026 — shares overnight skin temperature and sleep data; “Use a WHOOP 5.0 or WHOOP MG device”; 18+; about 37 listed countries; new Natural Cycles users get 12 months free with an active WHOOP membership. Accessed November 2, 2026. https://support.whoop.com/s/article/Natural-Cycles-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³

17. WHOOP. “HealthEx Integration.” WHOOP Support, last published May 28, 2026 — imports conditions, medications and lab results; “U.S.-based members only”; “included as part of your WHOOP membership at no additional cost.” Accessed November 2, 2026. https://support.whoop.com/s/article/HealthEx-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹²

18. WHOOP. “WHOOP API” reference. WHOOP Developer Platform — v2 endpoints; scopes read:recovery (“Read Recovery data, including score, heart rate variability, and resting heart rate”), read:cycles, read:workout, read:sleep, read:profile, read:body_measurement; recovery fields recovery_score, resting_heart_rate, hrv_rmssd_milli, spo2_percentage, skin_temp_celsius. Accessed November 2, 2026. https://developer.whoop.com/api ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶

19. Intervals.icu. “Whoop integration added.” Intervals.icu Forum, June 11, 2024 — “You can sync sleep, resting HR, HRV (rMSSD), recovery, respiration and SpO2”; “Your complete history with Whoop is synced when you connect.” Accessed November 2, 2026. https://forum.intervals.icu/t/whoop-integration-added/69075 ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹

20. WHOOP. “TrainingPeaks Integration.” WHOOP Support, last published October 6, 2025 — sends hours slept, REM/deep/light sleep time, times woken, time awake, HRV, RHR and Recovery Score; “all WHOOP memberships (One, Peak, and Life) can sync”; “No, the integration is one-way only”; “WHOOP updates your sleep data whenever a new sleep session is recorded or recalculated.” Accessed November 2, 2026. https://support.whoop.com/s/article/TrainingPeaks-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹

21. WHOOP. “Clue Plus Integration.” WHOOP Support, last published February 13, 2026 — “The following metrics can be imported from WHOOP into Clue: Skin Temperature, Sleep Data”; free 3-month Clue Plus trial for WHOOP members. Accessed November 2, 2026. https://support.whoop.com/s/article/Clue-Plus-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹

22. FORM. “Integration with WHOOP.” FORM Support — “your Recovery score will be imported to FORM each day”; “HeadCoach™ workouts are a Premium Feature.” Accessed November 2, 2026. https://support.formswim.com/hc/en-us/articles/54795121217043-Integration-with-WHOOP ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸

23. Intervals.icu. “Pricing.” — “Intervals.icu is free for everyone”; Supporter “$4 /month.” Accessed November 2, 2026. https://www.intervals.icu/pricing ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶

24. TrainingPeaks. “WHOOP.” TrainingPeaks Help Center, May 19, 2023 — “TrainingPeaks imports HRV, Pulse (Resting Heart Rate (RHR)), Sleep Hours, Times Woken, Time in Deep Sleep (SWS), Time in REM Sleep, Time in Light Sleep, and Total Time Awake. We do not currently import Whoop proprietary metrics like Strain, Recovery, or Sleep performance”; “Whoop does not send workouts to TrainingPeaks”; “The WHOOP>Trainingpeaks sync is not historical.” Accessed November 2, 2026. https://help.trainingpeaks.com/hc/en-us/articles/360036017652-WHOOP ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶

25. TrainingPeaks. “Pricing.” — TrainingPeaks Premium $19.95 a month or $134.99 a year. Accessed November 2, 2026. https://www.trainingpeaks.com/pricing/ ↩ ↩² ↩³ ↩⁴

26. Cronometer. “Free Features.” Cronometer Blog, August 24, 2022 — “Connect your Fitbit, Garmin or Suunto, Oura, WHOOP, Withings or Keto Mojo devices.” Accessed November 2, 2026. https://cronometer.com/blog/free-features/ ↩ ↩² ↩³ ↩⁴

27. pliability. “pliability × WHOOP.” — “WHOOP members get 1 month free.” Accessed November 2, 2026. https://pliability.com/whoop ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶

28. WHOOP. “Peloton Integration.” WHOOP Support, last published October 28, 2026 — Peloton → WHOOP and WHOOP → Peloton connections; “WHOOP does not import heart rate data recorded by Peloton”; “you do not need to own Peloton equipment”; “Activities are expected to sync within approximately 1 minute”; “Historical Peloton activities are not imported retroactively.” Accessed November 2, 2026. https://support.whoop.com/s/article/Peloton-Integration ↩ ↩² ↩³ ↩⁴ ↩⁵

29. WHOOP. “WHOOP Expands Integrations with Peloton and Zwift Integrations.” WHOOP Press Center, October 28, 2026 — “48% of Cycling/Spin sessions imported from a connected app or device”; Ed Baker, Chief Product Officer at WHOOP: “These integrations make it easier for members to connect their WHOOP insights with the ways they already train, so they can make more informed decisions about their health and performance every day.” Accessed November 2, 2026. https://www.whoop.com/us/en/press-center/whoop-expands-integrations-with-peloton-and-zwift-integrations/ ↩ ↩² ↩³

30. Zwift. “Zwift and Third-Party Platforms.” Zwift Support — “Whoop shares your recovery score with Zwift. Zwift uses your recovery score to adapt your personalized recommendations.” Accessed November 2, 2026. https://support.zwift.com/en_us/zwift-and-third-party-platforms-SypU0LdVr ↩ ↩²

31. WHOOP. “API Changelog.” WHOOP Developer Platform — “2025-07-01: v2 API Launch”; 2025-11-01: v1 webhooks no longer published; 2026-09-23: “Cycles now include the total number of steps taken during the cycle.” Accessed November 2, 2026. https://developer.whoop.com/docs/api-changelog/ ↩ ↩² ↩³

32. WHOOP. “Rate Limiting.” WHOOP Developer Platform — “100 requests per minute”; “10,000 requests per day.” Accessed November 2, 2026. https://developer.whoop.com/docs/developing/rate-limiting ↩ ↩²

33. WHOOP. “v1 to v2 Migration.” WHOOP Developer Platform — “The v1 API is no longer supported and any new features or functionality will be added to v2 only.” Accessed November 2, 2026. https://developer.whoop.com/docs/developing/v1-v2-migration/ ↩

34. WHOOP. “OAuth 2.0.” WHOOP Developer Platform — “You must request the offline scope to receive a refresh token.” Accessed November 2, 2026. https://developer.whoop.com/docs/developing/oauth/ ↩

35. WHOOP. “App Approval.” WHOOP Developer Platform — “Every new app starts on the Sandbox tier, which allows up to 10 WHOOP members to connect”; “You can build and test on Sandbox without submitting a request.” Accessed November 2, 2026. https://developer.whoop.com/docs/developing/app-approval ↩ ↩²

36. Lifestack. “5 Best Apps to Use With WHOOP.” Lifestack Blog, May 6, 2026 — Lifestack “reads recovery, sleep, HRV, and strain data from WHOOP.” Accessed November 2, 2026. https://lifestack.ai/blog/5-best-apps-to-use-with-whoop ↩

37. Welltory. “Is my device compatible with Welltory for HRV measurements and activity tracking?” Welltory Help Center — device table: “Whoop 4.0 / HR monitor: HRV Yes; activity tracking No”; “Whoop 5.0 / HR monitor: HRV Yes; activity No.” Accessed November 2, 2026. https://help.welltory.com/en/articles/4998580-is-my-device-compatible-with-welltory-for-hrv-measurements-and-activity-tracking ↩

38. WHOOP. “Canceling Your Membership.” WHOOP Support, last published October 22, 2026 — “Once your membership has ended, WHOOP will no longer collect, upload, or analyze your biometric data.” Accessed November 2, 2026. https://support.whoop.com/s/article/Canceling-Your-Membership ↩ ↩² ↩³ ↩⁴

39. WHOOP. “Membership.” whoop.com, US — WHOOP One “Available at $199/yr” (WHOOP 5.0); WHOOP Peak “Available at $239/yr” (WHOOP 5.0); WHOOP Life “Available at $359/yr” (WHOOP MG); WHOOP Life adds “Blood pressure insights for wellness” and “Heart Screener with ECG readings”; “1 - month free trial”; “HSA/FSA eligible.” Accessed November 2, 2026. https://www.whoop.com/us/en/membership/ ↩ ↩² ↩³ ↩⁴ ↩⁵

40. Hydrow. “Compatible Heart Rate Monitors.” Hydrow Support — “Whoop Strap 3.0 & 4.0 (Note: requires a separate subscription, Bluetooth Only via Whoop App)”; “Whoop Strap 5.0” listed under incompatible monitors. Accessed November 2, 2026. https://support.hydrow.com/hc/en-us/articles/360033700571-compatible-heart-rate-monitors ↩ ↩² ↩³

41. Dial MB, Hollander ME, Vatne EA, et al. Validation of nocturnal resting heart rate and heart rate variability in consumer wearables. Physiological Reports. 2025;13(16):e70527. doi:10.14814/phy2.70527. PMID: 40834291. https://pubmed.ncbi.nlm.nih.gov/40834291/ ↩ ↩² ↩³ ↩⁴

42. Miller DJ, Lastella M, Scanlan AT, et al. A validation study of the WHOOP strap against polysomnography to assess sleep. Journal of Sports Sciences. 2020;38(22):2631-2636. doi:10.1080/02640414.2020.1797448. PMID: 32713257. https://pubmed.ncbi.nlm.nih.gov/32713257/ ↩ ↩² ↩³

43. Miller DJ, Roach GD, Lastella M, et al. A Validation Study of a Commercial Wearable Device to Automatically Detect and Estimate Sleep. Biosensors (Basel). 2021;11(6):185. doi:10.3390/bios11060185. PMID: 34201016. https://pubmed.ncbi.nlm.nih.gov/34201016/ ↩ ↩² ↩³

44. Miller DJ, Sargent C, Roach GD. A Validation of Six Wearable Devices for Estimating Sleep, Heart Rate and Heart Rate Variability in Healthy Adults. Sensors (Basel). 2022;22(16):6317. doi:10.3390/s22166317. PMID: 36016077. https://pubmed.ncbi.nlm.nih.gov/36016077/ ↩ ↩²

45. Berryhill S, Morton CJ, Dean A, et al. Effect of wearables on sleep in healthy individuals: a randomized crossover trial and validation study. Journal of Clinical Sleep Medicine. 2020;16(5):775-783. doi:10.5664/jcsm.8356. PMID: 32043961. https://pubmed.ncbi.nlm.nih.gov/32043961/ ↩ ↩²

46. Bellenger CR, Miller DJ, Halson SL, et al. Wrist-Based Photoplethysmography Assessment of Heart Rate and Heart Rate Variability: Validation of WHOOP. Sensors (Basel). 2021;21(10):3571. doi:10.3390/s21103571. PMID: 34065516. https://pubmed.ncbi.nlm.nih.gov/34065516/ ↩ ↩² ↩³

47. Schyvens AM, Peters B, Van Oost NC, et al. A performance validation of six commercial wrist-worn wearable sleep-tracking devices for sleep stage scoring compared to polysomnography. Sleep Advances. 2025;6(2):zpaf021. doi:10.1093/sleepadvances/zpaf021. PMID: 40303381. https://pubmed.ncbi.nlm.nih.gov/40303381/ ↩ ↩²

48. Van Oost CN, Masci F, Malisse A, et al. Accuracy of Heart Rate Measurement Under Transient States: A Validation Study of Wearables for Real-Life Monitoring. Sensors (Basel). 2025;25(20):6319. doi:10.3390/s25206319. PMID: 41157371. https://pubmed.ncbi.nlm.nih.gov/41157371/ ↩

49. Bellenger CR, Miller D, Halson SL, et al. Evaluating the Typical Day-to-Day Variability of WHOOP-Derived Heart Rate Variability in Olympic Water Polo Athletes. Sensors (Basel). 2022;22(18):6723. doi:10.3390/s22186723. PMID: 36146073. https://pubmed.ncbi.nlm.nih.gov/36146073/ ↩ ↩²

50. WHOOP. “Resolving WHOOP App Errors & Crashes.” WHOOP Support, last published October 6, 2025 — “Make sure Bluetooth is enabled on your phone”; “Device Settings > Sync Now”; “Forget and re-pair the WHOOP device”; “Update WHOOP firmware via the Device Settings in-app”; “Make sure to keep your WHOOP app running the background to avoid data loss”; “Disable Low Power Mode or Battery Saver.” Accessed November 2, 2026. https://support.whoop.com/s/article/Resolving-WHOOP-App-Errors-Crashes ↩ ↩² ↩³