Privacy Policy

Last updated 27 October 2026

The short version

Revive keeps your health data on your phone. We run no servers that receive it, we have no accounts, and we use no analytics, advertising or tracking. We cannot see, sell or share your health data because we never get it.

What the app stores, and where

On your phone only: heart rate, heart rate variability, resting heart rate, blood oxygen, skin temperature, breathing rate, sleep and its stages, steps, workouts (including heart rate, and routes and photos if you choose to keep them), journal entries, the profile you enter (birth year, sex, height, weight, goals), and settings.

Your wearable's Bluetooth key is stored in the phone's secure storage (Keychain on iPhone, encrypted app storage on Android).

You can export everything to a file, and delete it by deleting the app or its data. We cannot recover it for you, because we do not have it.

When the app uses the internet

Only for features you use, and never to upload health data:

• Signing in with Zepp (to fetch your strap's pairing key, once). This opens Zepp Health's own sign-in page. We never see your password. The app token and user ID it returns are used for firmware checks and can be cleared by signing out or deleting the app.
• Firmware checks, if you ask for them. These send your Zepp token, user ID and the strap's firmware version, hardware version and serial number to the update server.
• Maps. On iPhone, maps come from Apple Maps. On Android, a GPS workout map loads tiles from OpenFreeMap, and the optional satellite view loads imagery from Esri. A map service sees your IP address and roughly the area shown. Your route is never sent. On Android, the route-only option loads no map tiles.

If we add an AI feature (see below), it will be off until you turn it on, and this policy will be updated before it ships.

Permissions, and why

• Bluetooth: to find and talk to your strap.
• Location: only for a workout where you switch on GPS, and for optional "arrive at a place" reminders, which watch the places you choose on your phone. Route points are used for distance, pace and the map and are kept only if you choose to keep them.
• Motion and fitness (planned): to notice a workout you did not start.
• Camera and photos: to add photos to a workout and to make a share picture. Photos stay on the phone unless you share them.
• Apple Health and Health Connect: to read sleep and heart rate your watch recorded, and, if you choose, to write Revive's data back. We read only the data types listed on the permission screen. Health data is never used for advertising or shared with third parties.
• Music library (iPhone): to show what Apple Music is playing and let you pause or skip.
• Notifications: for connection status, health alerts, reminders and workout prompts.
• Phone state and notification access (Android, optional): to buzz your strap for calls and notifications. The app never reads numbers, contacts, titles or message text.

What we do not do

• No advertising, no data brokers, no selling or renting data.
• No analytics or crash-reporting SDKs. Crash information reaches us only if you choose to send it from the App Store, Google Play, or by copying the in-app diagnostics log into a bug report. Never include your strap key.
• No profiling or automated decisions about you.

Not medical advice

Scores such as Recovery, Energy, Sleep and Healthspan are estimates for personal insight. They are not a medical device and do not diagnose, treat or prevent any condition. If you are worried about a reading, speak to a health professional.

Children

The app is not directed at children under 13 (or the age required in your country), and we do not knowingly collect anything from them.

Your rights

Because your data stays on your device, you control it: view it in the app, export it, and delete it by deleting the app. If you contact us about data you believe we hold, we will answer within 30 days. Depending on where you live (for example the EU, UK, India or California) you may have additional rights, and we honour them.

Changes to this policy

If we change how data is handled, we will update this page and the date below, and for material changes tell you in the app before they apply.

Contact

Optional Labs — developer@optionallabs.com