VO2 Max & Cardio Fitness
Jack Wallner Health & Fitness iPhoneiPod touchApple Watch
VO2 Max & Cardio Fitness is a free Health & Fitness app for iPhone and iPod touch by Jack Wallner. Requires iOS 17.0. Updated October 27, 2026.
- Price
- Free
- on the App Store
- Size
- 16 MB
- Age 4+
- Updated
- Oct 27
- 2026 · v1.1.4
Screenshots
About VO2 Max & Cardio Fitness
See your Apple Health VO2 max estimate and cardio fitness trend in a calm, focused dashboard. VO2 Max Daily Tracker shows: • Your latest Apple Health estimate • Improving, stable, or declining trend • A personal target range • One-year history • A broad fitness-age estimate with clear methodology • Home Screen and Lock Screen widgets • Apple Watch app and complications • Guidance when no estimate is available Your fitness data stays on your devices. The app reads Cardio Fitness estimates from Apple Health and never writes Health data. VO2 max and fitness age are broad estimates for fitness awareness. This app does not diagnose, treat, cure, or prevent any health condition. It is not a substitute for professional medical advice. VO2+ is optional. Choose a monthly plan, a yearly plan, or a one-time lifetime purchase. Monthly and yearly plans include a 7-day free trial for eligible new subscribers. Prices are shown in the app before you buy and vary by region. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the current period ends. Manage or cancel subscriptions in Apple Account settings. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://jackwallner.github.io/vo2max/privacy-policy.html
What’s new
Version 1.1.4 · Updated October 27, 2026
Behind-the-scenes improvements and bug fixes for a smoother experience. Thank you for being here.
App privacy
The developer, Jack Wallner, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to VO2 Max & Cardio Fitness
Looking for apps like VO2 Max & Cardio Fitness? Here are 6 similar apps on the App Store. The highest rated is Just VO2 Max (5.0/5), and all 6 are free to download.
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| VO2 Max & Cardio Fitness | – | Free | October 27, 2026 | |
| Just VO2 Max | 5.0 / 5 (3) | Free | Oct 21, 2026 | Compare |
| Health iAge | – | Free | Oct 26, 2026 | Compare |
| VO2 Max Calculator & Training | 1.0 / 5 (1) | Free | Jan 27, 2026 | Compare |
| VO2 Prime | – | Free | Oct 13, 2026 | Compare |
| VO2 Max Tracker | 4.0 / 5 (1) | Free | Sep 21, 2026 | Compare |
| VO2Max | – | Free | Apr 4, 2026 | Compare |