Privacy Policy
Draft for professional review. This policy describes Metrier’s intended design. It must be checked against the released app, its production infrastructure, and applicable law before launch.
Metrier is an iOS wellness app that reads data from health services you connect and turns compatible measurements into personal health signals. This policy explains which data Metrier uses, where processing happens, and how you can control it. Metrier is not a medical device and does not provide medical advice.
The short version
- Metrier reads health data only after you connect a source and grant access.
- Metrier calculates its scores on your iPhone.
- Metrier does not sell health data or use advertising trackers.
- You can disconnect a source and remove the data Metrier held from it.
Data sources
The data Metrier can read depends on the connections and permissions you choose:
- Google Health and Fitbit: compatible activity, heart, sleep, and related wellness measurements through read-only Google authorization.
- Apple Health: compatible wellness measurements stored in Apple Health, including data that another device or service chooses to sync there.
- Strava: recent activity details shown in a separate Fitness section. Strava data is retained for no more than seven days and is not used for scoring, combined analytics, or health intelligence.
Some device makers keep brand-specific scores inside their own services. Metrier cannot read measurements that a provider does not share.
How Metrier uses health data
Metrier uses compatible connected measurements to calculate Recovery, Strain, Sleep, Energy Bank, Stress, Nutrition, and Biology views. The app compares many measurements with your own recent baseline. A missing input remains missing; Metrier does not silently replace it with a default value.
On-device intelligence
On eligible iPhones, Metrier can use Apple’s on-device intelligence to narrate already-calculated health signals in a weekly review. The model does not calculate the scores. Metrier provides a non-generative summary when the on-device model is unavailable.
Storage and service infrastructure
- Health readings, cached history, and calculated signals are stored on your device.
- Connection credentials are stored in the iOS Keychain.
- Some connections use a small Metrier-operated service to keep provider secrets out of the app and exchange authorization tokens. That service is not designed to retain your health history.
- The metrier.com host may process standard security and access logs needed to deliver the website. The website sets no advertising or analytics cookies.
Sharing
Metrier does not sell personal or health data. Data is shared only with services you choose to connect, infrastructure providers needed to operate those connections and the website, or authorities when disclosure is legally required.
Retention and deletion
- Disconnect a source in Metrier to revoke access and remove data held for that connection.
- Delete the app to remove its on-device data.
- Strava data is discarded after no more than seven days.
- Contact Metrier for requests concerning data outside your device.
Your choices and rights
Depending on where you live, you may have rights to access, correct, export, restrict, or delete personal data and withdraw consent. Most health data lives on your device, so you can exercise many choices inside the app. Contact Metrier for anything else.
Children
Metrier is not directed to children under 16 and does not knowingly collect their data.
Changes
This policy will change as Metrier develops. The date above will be updated, and material changes will be surfaced in the app or on this page.
Contact
Privacy questions and requests: privacy@metrier.com.