VO2 Max Trainer: Fitness Age
Norwegian 4x4 & Cooper Test
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Turn your VO2 max into a plan. Set a goal, train with Norwegian 4x4, Zone 2 and 36+ other protocols, then follow your trend on iPhone and Apple Watch.
Your VO2 max is a number. VO2 Max Trainer turns it into a training plan.
Start from your current level, choose a goal, and see a realistic path forward. Then train with guided intervals, easy aerobic sessions, and progressive programs on iPhone and Apple Watch.
START WITH YOUR NUMBER
- Import Cardio Fitness readings from Apple Health.
- Enter a result from a lab, watch, wearable, or previous test.
- Get a starting estimate from your age, profile, and activity history.
- Run a guided Cooper 12-minute, 1.5-mile, or Rockport 1-mile field test.
FOLLOW A PROGRESSIVE PLAN
- Choose from beginner, intermediate, and advanced programs lasting 8 to 12 weeks.
- Set a VO2 max goal and see an estimated time to reach it based on your current level and weekly training dose.
- Follow the next scheduled session or choose any workout when your week changes.
TRAIN WITH 38 PROTOCOLS
- Norwegian 4x4, 5 x 3, 8 x 2, Seiler 4 x 8, Billat 30/30, Ronnestad 30/15, Tabata, and more.
- Dedicated packs for VO2 max intervals, short intervals, threshold, Zone 2, sprints, beginners, and field tests.
- Switch sessions between running, walking, cycling, rowing, SkiErg, stairs, swimming, elliptical, Air Bike, or bodyweight.
- Build a quick session or create and save your own interval workout.
TRAIN FROM YOUR WRIST
- Start supported sessions on Apple Watch.
- See live heart rate, target zone, interval timing, and what comes next.
- Review time in zone and completed work after the session.
- Save completed Apple Watch sessions to Fitness.
SEE WHAT IS CHANGING
- Keep readings from Apple Health, field tests, manual entries, and other devices in one trend.
- Compare your current number with your goal.
- See fitness age and percentile context based on your profile.
- Track your weekly hard-session dose, training history, awards, and statistics.
VO2 max values produced by field tests and profile estimates are estimates, not lab measurements. VO2 Max Trainer is a fitness tool, not medical advice. Consult a qualified healthcare professional before beginning vigorous or near-maximal exercise.
Questions or feedback? Contact us from Settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://makerbox.notion.site/Workout-Tracker-Privacy-Policy-32cd30b69c4481aa857ff2419091132d
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Personalized VO2 max training plans
• Guided workouts on iPhone and Apple Watch
• VO2 max progress, goals, and achievements
The developer, Denis Kulkov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Denis Kulkov
- Size
- 42.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 27 more
- English, Arabic, Croatian, Czech, Danish, Dutch, Filipino, French, German, Greek, Hebrew, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Monthly $4.99
- Weekly $3.99
- Lifetime access $29.99
- Yearly $14.99
- Copyright
- © 2026 Denis Kulkov

