Stream Sleep Cycle data. No Sleep Cycle API needed.
Sleep Cycle tracks sleep from the phone and writes sleep analysis and heart rate to Apple Health — and Sahha’s SDK reads them into your app as normalized biomarkers and sleep scores, alongside every other source.
- On-device
- Apple Health
- iOS
- HIPAA
- GDPR
Free for 30 days · No credit card
- Sleep duration
- 7:04 h
- Time in bed
- 7:38 h
- Resting heart rate
- 57 bpm
Identical schema across 500+ sources
Your users connect Sleep Cycle. Sahha does the rest.
This is your user’s side of the story — one screen, once. Sahha ingests every Sleep Cycle signal, normalizes, deduplicates, and delivers it to your service — raw, or as refined intelligence your product can act on.
A Allow "your app"
On-device and permissioned
Sleep Cycle data is read on the user’s own device, only after they grant Apple Health permission — nothing syncs without consent.
One integration, every source
Permission is per data type, not per brand. Anything that writes to Apple Health — Sleep Cycle today, a new watch next year — flows through the same SDK with no extra prompt and no new code.
What Sleep Cycle syncs through Apple Health.
Request only what you need
You choose exactly which of these signals to request from Apple Health — users are only ever prompted for those, which keeps opt-in rates high.
One schema, every source
Sleep Cycle, Apple Watch, and Oura all return the same fields and units.
What crosses the bridge
Sleep analysis and heart rate pass through Apple Health; some app-exclusive metrics may not.
Sleep
2
HealthKitSahha- sleepAnalysis · asleepsleep_durationmin
- sleepAnalysis · inBedsleep_stage_in_bedmin
Heart
1
HealthKitSahha- heartRateheart_ratebpm
See a real payload
{
"type": "HKCategoryTypeIdentifierSleepAnalysis",
"value": "HKCategoryValueSleepAnalysisAsleepUnspecified",
"startDate": "2026-06-02T23:34:00Z",
"endDate": "2026-06-03T06:38:00Z",
"sourceRevision": { "source": { "name": "Sleep Cycle" } }
// …in-bed & heart rate samples
}[
{
"category": "sleep",
"type": "sleep_duration",
"value": 424,
"unit": "minute",
"periodicity": "daily",
"aggregation": "total",
"startDateTime": "2026-06-02T23:34:00Z",
"endDateTime": "2026-06-03T06:38:00Z"
}
// …time-in-bed & heart rate logs
]Sleep Cycle writes sleep analysis (asleep and time in bed) and heart rate to Apple Health; detailed sleep-stage breakdown depends on your Sleep Cycle plan. It’s an iOS app, so its data lands in Apple Health — on Android, Sleep Cycle syncs to Google Fit rather than Health Connect.
Missing a metric you need? Talk to us in the Sahha Slack — if Sleep Cycle captures it, we can usually add support.
Get more than just raw data
Sahha turns these signals into biomarkers, scores, archetypes, and insights — the modeling done for you.
Reading Apple Health yourself? Here’s the to-do list.
Everything on the left is yours to write, test, and maintain on iOS. Everything on the right, Sahha already did.
- Integrate Apple Health.
- Handle iOS version differences.
- Add Health Connect separately for Android.
One SDK covers Apple Health, Health Connect, and every cloud source.
- Write the HealthKit queries.
- Request the right permissions.
- Wire up background delivery.
The SDK handles queries, permissions, and background sync.
- Dedupe apps writing the same metric.
- Map dozens of HealthKit types.
- Reconcile against your Android sources.
Deduped, typed, one schema — one stream per user.
- Build a sleep model.
- Build an activity model.
- Hire a data scientist.
Scores, archetypes, and insights — built in.
- Apple changes a HealthKit API.
- You find out in production.
We version the SDK. You never notice.
No Sleep Cycle developer account needed — Sahha reads what Sleep Cycle already writes to Apple Health on iOS.
Live in an afternoon, not a sprint.
- # Add the Sahha SDKnpm install sahha-react-native01
Add the Sahha SDK
Drop the Sahha SDK into your iOS app — or React Native or Flutter. The same SDK also covers Health Connect for your Android sources.
- A
Allow “your app”
ConnectSleepActivityHeart rate02Prompt for Apple Health permissions
Call the SDK to show the native Apple Health consent sheet. The user chooses what to share — under your brand. It’s one prompt, ever: permission is per data type, not per brand, so every future source is already covered.
- Your app LIVESleep7h 12mReadiness82Heart rate62 bpm03
Sahha reads and delivers
Once permission is granted, the SDK reads Sleep Cycle data from Apple Health in the background, normalizes it to one schema, and streams it to your app by webhook or API.
Most teams read live Sleep Cycle data the same day they add the SDK. The only per-source prerequisite: your user has Sleep Cycle’s Apple Health sync switched on — most source apps enable it by default.
Route it into your stack.
Sahha streams every update to your webhook — and a step-by-step guide takes it the rest of the way into your database, CDP, or messaging tool.
Sleep Cycle integration questions
How does Sahha get Sleep Cycle data?
Sleep Cycle writes sleep analysis and heart rate to Apple Health, and Sahha reads them from there with its mobile SDK — no Sleep Cycle API to integrate.
Does the Sleep Cycle integration work on Android?
Sahha reads Sleep Cycle through Apple Health on iOS. On Android, Sleep Cycle syncs to Google Fit rather than Health Connect, so cover Android users through a Health Connect source instead — all normalized to the same schema.
Do I need a mobile app to use the Sleep Cycle integration?
Yes. Because Sleep Cycle data lands in Apple Health on the user’s device, you embed the Sahha mobile SDK to read it. Cloud-only sources like Oura don’t need the SDK, but on-device sources like Sleep Cycle do.
Is the Sleep Cycle integration HIPAA and GDPR compliant?
Yes. Sahha is HIPAA and GDPR compliant and SOC 2 certified, and Sleep Cycle data flows through the same compliant pipeline as every other source.
One API for every other source, too.
Add another wearable or app and the schema, webhooks, and scores are identical — no new pipeline to build.
Start streaming Sleep Cycle data today.
Connect once. Sahha handles consent, normalization, and real-time delivery — for Sleep Cycle and every other source.
Free for 30 days · No credit card
- One API for Sleep Cycle and every other source
- Real-time webhooks + on-demand REST, one normalized schema
- Scores, archetypes & insights — no modeling required
- HIPAA, GDPR & SOC 2 · your brand on the consent screen