# VO2 Max Trainer vs UltraVO2Max

The clearest difference is price: VO2 Max Trainer at Free against UltraVO2Max's $2.99. VO2 Max Trainer also leads on iOS requirement (18.6 vs 26.5). UltraVO2Max's advantage is in-app purchases (none vs 7). On update cadence, ads and device support there is nothing between them.

VO2 Max Trainer is free to download; UltraVO2Max costs $2.99 up front. VO2 Max Trainer sells 7 in-app purchases, starting at $1.99 per 7 days. UltraVO2Max asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | VO2 Max Trainer | UltraVO2Max |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/vo2-max-trainer-hiit-zone-2/id6736629740/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 286 MB | 12 MB |
| Requires iOS | **18.6** | 26.5 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Floch](https://appshunter.io/developer/1772752224) | [Pai Chin Chuan](https://appshunter.io/developer/1896688550) |

## What reviewers say

### 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 |


### UltraVO2Max

[App page](https://appshunter.io/ios/app/ultravo2max/id6769794479)

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

**In-app purchases:** none


## Frequently asked questions

### Is VO2 Max Trainer free?

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

### Is UltraVO2Max free?

UltraVO2Max costs $2.99, with no in-app purchases.

### Do VO2 Max Trainer or UltraVO2Max have ads?

Neither VO2 Max Trainer nor UltraVO2Max shows ads.

### Which is updated more often, VO2 Max Trainer or UltraVO2Max?

VO2 Max Trainer ships an update weekly, and UltraVO2Max weekly. Most recently, VO2 Max Trainer was updated on October 15, 2026 and UltraVO2Max on October 28, 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.*