VO2 Max Daily Tracker Privacy Policy

Last updated: August 17, 2026

VO2 Max Daily Tracker reads cardio fitness information from Apple Health only after you grant permission. It does not require an account and does not write HealthKit data.

HealthKit data

The app may read VO2 max estimates. When you enable additional cardio context, it may read resting heart rate, one-minute heart-rate recovery, and selected workout information. This data is processed and stored locally on your devices for fitness awareness. It is not uploaded, sold, used for advertising, or shared with third parties. Revoke access in iOS Settings.

Local storage

VO2 max history, fitness-age calculations, settings, and cached context remain on your devices. Removing the app removes its local data.

Purchases

VO2+ includes monthly and yearly auto-renewing subscriptions and a one-time lifetime purchase. Apple processes payment. RevenueCat verifies entitlement status and may process an anonymous app user ID, purchase and entitlement information, and limited technical context. It does not receive HealthKit data or fitness history. See RevenueCat's privacy policy.

Retention, children, and changes

Local data remains until you delete it or remove the app. Apple and RevenueCat retain transaction records under their policies. The app is not directed to children under 13 and does not knowingly collect personal information from children. We may update this policy when the app or its services change.