Privacy Policy

Last updated: 30 May 2026

TreadGame is built around one principle: your data is yours. Everything the app collects stays on your phone and watch, or in your personal health store — Apple Health on iOS, Health Connect on Android — and never travels to any server we run. This page is the plain-English version of what that means in practice, and it applies to TreadGame on both the App Store (iPhone & Apple Watch) and Google Play (Android & Wear OS).

What the app uses

• Heart rate, distance, calories burned, running speed — read from and written to your platform's health store while a game is running, with your permission: Apple Health on iOS / Apple Watch, Health Connect on Android / Wear OS. Used to drive the on-screen display, log workouts (so they appear in Apple Fitness, Google Fit, Samsung Health and the like), and adapt game difficulty.
• Treadmill speed via Bluetooth — read directly from a paired FTMS-compatible treadmill (or iFit-protocol treadmill where supported). Used to move the runner in time with the belt. Nothing is recorded beyond what's needed for the current session.
• Phone & watch motion and body sensors — used for the on-watch pedometer fallback when no treadmill is connected, for live heart rate on the watch, and for tilt controls if you enable them. On iOS this is the Motion & Fitness permission; on Android / Wear OS it is the Body Sensors and Physical Activity permissions.
• Workout records, personal bests, character settings, language preference — stored on-device (iOS user defaults / Android local storage). On iOS they sync between your devices via iCloud if you have iCloud Drive turned on for TreadGame; on Android they stay local to the device. Nothing is stored on any server we run.

What the app does not do

• No accounts. No sign-in. No email address required.
• No analytics or telemetry sent to our servers. We don't run any servers.
• No advertising. No tracking SDKs. No data sold or shared with third parties.
• No location tracking. The treadmill stays in one place; we don't need GPS.

Health & fitness data

On iOS / Apple Watch: TreadGame reads your heart rate from Apple Health (when you grant permission) so the on-screen display can show it live, and writes a workout summary — distance, energy burned, running-speed series — to Apple Health at the end of each run so the session appears in the Fitness app alongside your other activity. All of this stays inside your own HealthKit store and never leaves your devices unless you export it. Revoke any of it in Settings → Privacy & Security → Health → TreadGame.

On Android / Wear OS: the same data is read and written through Health Connect (with the watch's Body Sensors and Physical Activity permissions for live heart rate and pace), so your runs appear in Health Connect and any app you've linked to it — Google Fit, Samsung Health, etc. It stays on your device and in your Health Connect store. Revoke it in the Health Connect settings, or on the watch under Settings → Apps → Permissions.

Either way, the app keeps working with permissions denied — the affected features (live heart rate, saved workouts, watch-estimated speed) just go quiet.

Bluetooth permissions

Bluetooth — and, on Android, the Nearby Devices permission — is used to talk to your treadmill and (optionally) a chest-strap heart rate monitor. It is never used to identify or track you, and the app does not scan for or store details of any device beyond the one you've paired.

Children

TreadGame doesn't collect any personal information from anyone, including children. The app contains no advertising, no in-app purchases, and no third-party content.

Changes

If we change this policy meaningfully (we expect very rarely), the updated version will appear here with a new "last updated" date. Substantial changes will also be noted in the app's release notes on the App Store and Google Play.

Contact

Questions, feedback, or want a copy of any data the app holds about you? Drop in to the TreadGame Discord and we'll get back to you.