# VO2 Max Trainer: Fitness Age

> Norwegian 4x4 & Cooper Test

Canonical page: [https://chrome-stats.com/d/id6760988595](https://chrome-stats.com/d/id6760988595)

## Overview

- **ID:** `id6760988595`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Denis Kulkov
- **Category:** Health & Fitness
- **Version:** 5.0
- **Last updated:** 2026-09-09
- **First published:** 2026-04-27
- **Size:** 40 MB
- **Data as of:** 2026-09-21
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/vo2-max-trainer-fitness-age/id6760988595)
- **Website:** [https://workouttimerapp.com](https://workouttimerapp.com/)
- **Privacy policy:** [https://makerbox.notion.site/Workout-Tracker-Privacy-Policy-32cd30b69c4481aa857ff2419091132d](https://makerbox.notion.site/Workout-Tracker-Privacy-Policy-32cd30b69c4481aa857ff2419091132d)

## Description

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

## Rankings

- #1,387,659 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6760988595)