Stream Evie Ring data. No Evie Ring API needed.
The Movano Evie Ring writes sleep, heart rate, HRV, SpO₂, and respiration to Apple Health — and Sahha’s SDK reads them into your app as normalized biomarkers, alongside every other source.
- On-device
- Apple Health
- iOS
- HIPAA
- GDPR
Free for 30 days · No credit card
- Sleep duration
- 7:26 h
- Resting heart rate
- 61 bpm
- SpO₂
- 98 %
Identical schema across 500+ sources
Your users connect Evie Ring. Sahha does the rest.
This is your user’s side of the story — one screen, once. Sahha ingests every Evie Ring 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
Evie Ring 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 — Evie Ring today, a new watch next year — flows through the same SDK with no extra prompt and no new code.
What Evie Ring syncs through Apple Health.
Works with
Evie RingRequest 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
Evie Ring, Apple Watch, and Oura all return the same fields and units.
What crosses the bridge
Sleep, heart rate, HRV, SpO₂, and respiration pass through Apple Health; some app-exclusive metrics may not.
Sleep
4
HealthKitSahha- sleepAnalysis · asleepDeepsleep_stage_deepmin
- sleepAnalysis · asleepCoresleep_stage_lightmin
- sleepAnalysis · asleepREMsleep_stage_remmin
- sleepAnalysis · awakesleep_stage_awakemin
Heart & vitals
4
HealthKitSahha- restingHeartRateresting_heart_ratebpm
- heartRateVariabilitySDNNheart_rate_variability_sdnnms
- oxygenSaturationoxygen_saturation%
- respiratoryRaterespiratory_ratebr/min
Activity & exercise
2
HealthKitSahha- stepCountstepscount
- activeEnergyBurnedactive_energy_burnedkcal
See a real payload
{
"sampleType": "HKCategoryTypeIdentifierSleepAnalysis",
"value": "asleepDeep",
"startDate": "2026-06-02T23:34:00Z",
"endDate": "2026-06-03T00:52:00Z",
"sourceRevision": { "source": { "name": "Evie" } }
}[
{
"category": "sleep",
"type": "sleep_stage_deep",
"value": 74,
"unit": "minute",
"periodicity": "daily",
"aggregation": "total",
"startDateTime": "2026-06-02T23:34:00Z",
"endDateTime": "2026-06-03T06:52:00Z"
}
]The Evie Ring is a women’s-health smart ring that writes its metrics to Apple Health on iOS — its data lands in Apple Health, not Health Connect. Cycle and mood are tracked in the Evie app but logged manually, so they aren’t part of this biomarker feed.
Missing a metric you need? Talk to us in the Sahha Slack — if Evie Ring 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 Evie Ring developer account needed — Sahha reads what Evie Ring 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 Evie Ring 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 Evie Ring data the same day they add the SDK. The only per-source prerequisite: your user has Evie Ring’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.
Evie Ring integration questions
How does Sahha get Evie Ring data?
The Evie app writes the ring’s sleep and health metrics to Apple Health, and Sahha reads them from there with its mobile SDK — no Evie API to integrate.
Which Evie Ring metrics does Sahha provide?
Sleep stages, resting heart rate, HRV, SpO₂, respiration, steps, and active energy — normalized into Sahha’s schema so they can join a user’s other signals and power scores.
Does the Evie Ring integration work on Android?
Evie writes to Apple Health on iOS, so Sahha reads it there. The same Sahha SDK also reads Health Connect on Android for your other sources, all normalized to one schema.
Is the Evie Ring integration HIPAA and GDPR compliant?
Yes. Sahha is HIPAA and GDPR compliant and SOC 2 certified, and Evie Ring 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 Evie Ring data today.
Connect once. Sahha handles consent, normalization, and real-time delivery — for Evie Ring and every other source.
Free for 30 days · No credit card
- One API for Evie Ring 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