Privacy Policy

Effective July 5, 2026

The short version: VO2Pro has no accounts and no ads. Your health and workout data stays on your devices and in Apple Health — we never see it or share it. The app collects only anonymous usage analytics (which features are used) to help us improve it, and analytics never includes your health data.

Who we are

VO2Pro is an iPhone and Apple Watch app that helps you improve your VO₂ max through high-intensity interval training. This policy describes how the app handles your information.

Data we collect

VO2Pro has no user accounts, no advertising, and no backend servers operated by us. We never collect your name, email, contacts, or precise location. The only data that leaves your device is anonymous usage analytics, described below.

Usage analytics

We use Google Firebase Analytics to understand how the app is used so we can improve it. This includes:

Feature usage events — for example, that a workout of a given type was started or finished, its duration, which screens were viewed, and interactions with the subscription paywall.
Device information — device model, iOS version, language/region, and a random app-instance identifier that is not tied to your name or Apple ID.

Analytics never includes your health data: no heart-rate readings, no VO₂ max values, and nothing read from Apple Health. Analytics data is processed by Google on our behalf; see Google's privacy policy.

Health data

With your permission, VO2Pro interacts with Apple Health (HealthKit):

On iPhone (read-only): your VO₂ max, weight, height, biological sex, and age — used solely to personalize workouts and heart-rate zones. The iPhone app never writes to Apple Health.
On Apple Watch: during a workout, the watch app reads your live heart rate and active energy, and saves the workout session to Apple Health, as fitness apps normally do.

All of this data stays on your devices and in Apple Health. Live heart rate is streamed directly from your watch to your iPhone over Apple's device-to-device connection — it never touches the internet, and it is never included in analytics. You can review or revoke Health permissions anytime in the Health app, and manage or delete recorded workouts there as well.

Workout history and profile

Your workout history, custom workouts, and profile details (age, height, weight, sex) are stored locally on your iPhone. Deleting the app deletes this data. Editing your details in VO2Pro never changes your Apple Health records.

Purchases

VO2Pro Max subscriptions are processed entirely by Apple through the App Store. We never see or store your payment information. Manage or cancel your subscription in your App Store account settings; refunds are handled by Apple at reportaproblem.apple.com.

Children

VO2Pro is not directed at children under 13 and does not knowingly collect information from anyone — including children.

Changes to this policy

If the app's data practices ever change, we will update this page and the effective date above before the change takes effect.

Contact

Questions about privacy? Email thetappinggame@gmail.com.