# VO2 Max Trainer: Fitness Age — Norwegian 4x4 & Cooper Test

> Norwegian 4x4 & Cooper Test (iPhone/iPad app by Denis Kulkov.)

- Source: https://appshunter.io/ios/app/vo2-max-trainer-fitness-age/id6760988595 (this page in markdown: same URL + `.md`)
- Developer: [Denis Kulkov](https://appshunter.io/developer/1867205516)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 40 MB
- Languages: American English, Arabic, Croatian, Czech, Danish, Dutch, Filipino, French (France), German (Germany), Greek and 18 more
- Released: 2026-04-27
- Data updated: 2026-09-18
- User reviews in markdown: https://appshunter.io/ios/app/vo2-max-trainer-fitness-age/id6760988595/reviews.md

## What is VO2 Max Trainer?

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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $19.99 | per year |
| Weekly | $4.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime access | $24.99 | one-time |



## Version history (last 5 releases)

### 5.0 — 2026-09-09

• Personalized VO2 max training plans
• Guided workouts on iPhone and Apple Watch
• VO2 max progress, goals, and achievements

### 4.0 — 2026-09-02

Stability improvements and localization fixes.

### 3.2 — 2026-08-17

Performance improvements and bug fixes.

### 3.1 — 2026-08-15

The Apple Watch app now follows your chosen language everywhere, plus bug fixes.

### 3.0 — 2026-07-31

Added achievements and challenges. Earn badges and track your progress.

## Apps similar to VO2 Max Trainer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Round Timer: HIIT & Tabata](https://appshunter.io/ios/app/round-timer-hiit-and-tabata/id6761403287) | — | Free | Health & Fitness |
| [Random Workout](https://appshunter.io/ios/app/random-workout/id6759794529) | — | Free | Health & Fitness |
| [Repster - Gym Workout Tracker](https://appshunter.io/ios/app/repster-gym-workout-tracker/id6766094305) | — | Free | Health & Fitness |
| [Cross Timer - Workout Clock](https://appshunter.io/ios/app/cross-timer-workout-clock/id6773071111) | — | Free | Health & Fitness |
| [WOD Shuffle: Random Workouts](https://appshunter.io/ios/app/wod-shuffle-random-workouts/id6765900857) | — | Free | Health & Fitness |
| [RestBeat: Gym Rest Timer](https://appshunter.io/ios/app/restbeat-gym-rest-timer/id6775745248) | — | Free | Health & Fitness |

## More apps by Denis Kulkov

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- [Padel Scoreboard: Bandeja](https://appshunter.io/ios/app/padel-scoreboard-bandeja/id6757689859)
- [Social Media Blocker: Blokt](https://appshunter.io/ios/app/social-media-blocker-blokt/id6757745236)
- [Pickleball Scoreboard: Track](https://appshunter.io/ios/app/pickleball-scoreboard-track/id6758124151)
- [Tennis Scoreboard: Set](https://appshunter.io/ios/app/tennis-scoreboard-set/id6758435522)
- [Eye Rest Reminder: Break](https://appshunter.io/ios/app/eye-rest-reminder-break/id6758504422)

All apps by Denis Kulkov: https://appshunter.io/developer/1867205516

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-18.*