# VO2 Max vs VO2 Max Trainer

The clearest difference is rating: VO2 Max at 3.8 against VO2 Max Trainer's 3.0. VO2 Max also leads on review sentiment (27% vs 0%) and ratings volume (127 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. VO2 Max sells 3 in-app purchases, starting at $2.99 per month and VO2 Max Trainer sells 7 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

VO2 Max holds the better App Store score, 3.8 against 3.0. That said, the two scores are not equally well evidenced: VO2 Max has 127 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 27% of VO2 Max's written reviews are positive against 0% of VO2 Max Trainer's.

VO2 Max ships an update every 10 days, VO2 Max Trainer weekly. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | VO2 Max | VO2 Max Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (127 ratings)](https://appshunter.io/ios/app/vo2-max-widget-notifications/id1394840943/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/vo2-max-trainer-hiit-zone-2/id6736629740/reviews) |
| Number of ratings | **127** | 2 |
| Positive reviews | **26.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 81 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Bernhard Hering](https://appshunter.io/developer/327542085) | [Kevin Floch](https://appshunter.io/developer/1772752224) |

## What reviewers say

### VO2 Max

[App page](https://appshunter.io/ios/app/vo2-max-widget-notifications/id1394840943)

Track your body's oxygen absorption at peak effort with detailed insights and performance estimates for running and cycling. Visualize trends, compare personal bests, and understand your cardio fitness level with a redesigned dashboard and Apple Watch integration.

**Highlights:** VO2 max estimation for running and cycling, Performance estimates (W/kg, FTP), Redesigned dashboard with trends and personal bests, Interactive charts with customizable date ranges, Apple Watch complications and iPhone widgets, Cardio fitness level comparison by age and sex

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Yearly Subscription | $17.99 | per year |
| Lifetime Access | $79.99 | one-time |


### VO2 Max Trainer

[App page](https://appshunter.io/ios/app/vo2-max-trainer-hiit-zone-2/id6736629740)

Measure, track, and improve your VO2 Max with a variety of fitness tests and personalized training plans. Features include HIIT and Zone 2 workouts, progress tracking, and integration with Apple Watch and HealthKit.

**Highlights:** Measure VO2 Max with 5 fitness tests, HIIT and Zone 2 training, Track progress and compare to leaderboards, Apple Watch integration, HealthKit integration, Training readiness scoring, Fitness age calculation

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VO2_Weekly | $1.99 | per 7 days |
| VO2_Monthly | $1.99 | per month |
| VO2_Annually | $14.99 | per year |
| VO2_Lifetime_Upgrade | $9.99 | one-time |
| VO2_Lifetime_Upgrade2 | $14.99 | one-time |
| VO2_Lifetime | $19.99 | one-time |
| VO2_Lifetime2 | $29.99 | one-time |


## Frequently asked questions

### Is VO2 Max free?

VO2 Max is free to download, with in-app purchases available.

### Is VO2 Max Trainer free?

VO2 Max Trainer is free to download, with in-app purchases available.

### Which has better reviews, VO2 Max or VO2 Max Trainer?

VO2 Max is rated higher. VO2 Max averages 3.8 out of 5 from 127 ratings, while VO2 Max Trainer averages 3.0 from 2 ratings.

### Do VO2 Max or VO2 Max Trainer have ads?

Neither VO2 Max nor VO2 Max Trainer shows ads.

### Which is updated more often, VO2 Max or VO2 Max Trainer?

VO2 Max ships an update every 10 days, and VO2 Max Trainer weekly. Most recently, VO2 Max was updated on September 21, 2026 and VO2 Max Trainer on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*