Stream Matrix Fitness data. Straight from the phone.
Matrix Fitness is a gym equipment brand — the same parent, Johnson Health Tech, behind Bowflex JRNY and Horizon — and its iOS app offers to “save your workouts” to Apple Health. Sahha’s SDK reads them into your app as normalized exercise sessions, alongside every other source.
- On-device
- Apple Health
- iOS
- HIPAA
- GDPR
Free for 30 days · No credit card
- Cardio session
- 31 min
- Distance
- 4.8 km
- Heart rate
- 139 bpm
Identical schema across 500+ sources
Your users connect Matrix Fitness. Sahha does the rest.
This is your user’s side of the story — one screen, once. Sahha ingests every Matrix Fitness 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
Matrix Fitness 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 — Matrix Fitness today, a new watch next year — flows through the same SDK with no extra prompt and no new code.
What Matrix Fitness 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
Matrix Fitness, Apple Watch, and Oura all return the same fields and units.
What crosses the bridge
Workouts, active energy, distance, and heart rate pass through Apple Health; some app-exclusive metrics may not.
Activity & exercise
3
HealthKitSahha- workoutActivityTypeexercise_session_*min
- activeEnergyBurnedactive_energy_burnedkcal
- distanceWalkingRunningdistance_walkingkm
Heart & vitals
1
HealthKitSahha- heartRateheart_ratebpm
See a real payload
{
"type": "HKWorkoutTypeIdentifier",
"workoutActivityType": "HKWorkoutActivityTypeRunning",
"duration": 1860,
"totalEnergyBurned": { "value": 328, "unit": "kcal" },
"totalDistance": { "value": 4.8, "unit": "km" },
"sourceRevision": { "source": { "name": "Matrix Fitness" } }
}[
{
"category": "activity",
"type": "exercise_session_running",
"value": 31,
"unit": "minute",
"periodicity": "session",
"aggregation": "total",
"startDateTime": "2026-06-02T12:05:00Z",
"endDateTime": "2026-06-02T12:36:00Z"
},
{
"category": "activity",
"type": "active_energy_burned",
"value": 328,
"unit": "kcal",
"periodicity": "session",
"aggregation": "total",
"startDateTime": "2026-06-02T12:05:00Z",
"endDateTime": "2026-06-02T12:36:00Z"
}
]This is an Apple-Health-only integration, and the direction matters: the Matrix Fitness Android app reads from Health Connect rather than writing to it, so the Android app is not a source. Only the iOS app writes workouts out.
Missing a metric you need? Talk to us in the Sahha Slack — if Matrix Fitness 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 Matrix Fitness developer account needed — Sahha reads what Matrix Fitness 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 Matrix Fitness 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 Matrix Fitness data the same day they add the SDK. The only per-source prerequisite: your user has Matrix Fitness’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.
Matrix Fitness integration questions
How does Sahha get Matrix Fitness data?
The Matrix Fitness iOS app offers to save your workouts to Apple Health, and Sahha reads them from there with its mobile SDK — so you get equipment workouts without integrating a Matrix Fitness API directly.
What Matrix Fitness data does Sahha receive?
The workout duration, active energy, distance, and heart rate. They arrive as normalized exercise sessions and vitals, in the same fields and units as every other source.
Is Matrix Fitness related to Bowflex JRNY?
Yes — both sit under Johnson Health Tech, alongside Horizon. They ship separate apps with separate sync behaviour, so treat each as its own source rather than assuming one integration covers the others.
Does the Matrix Fitness integration work on Android?
No. The Matrix Fitness Android app reads from Health Connect rather than writing to it — the data flows the wrong way for our purposes, so the Android app is not a source and this stays an Apple-Health-only integration. Your users’ other Android sources still flow through the same Sahha SDK.
Is the Matrix Fitness integration HIPAA and GDPR compliant?
Yes. Sahha is HIPAA and GDPR compliant and SOC 2 certified, and Matrix Fitness 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 Matrix Fitness data today.
Connect once. Sahha handles consent, normalization, and real-time delivery — for Matrix Fitness and every other source.
Free for 30 days · No credit card
- One API for Matrix Fitness 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