# VO2 Max Trainer vs DuviFit

The clearest difference is update cadence: VO2 Max Trainer at weekly against DuviFit's monthly. VO2 Max Trainer also leads on device support. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. VO2 Max Trainer sells 7 in-app purchases, starting at $1.99 per 7 days and DuviFit sells 2 in-app purchases, starting at $29.99 per year. Whichever you choose, the download price is not the number that matters.

VO2 Max Trainer ships an update weekly, DuviFit monthly. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | VO2 Max Trainer | DuviFit |
| --- | --- | --- |
| Price | Free | Free |
| 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 | Yes |
| Ads | No | — |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 286 MB | 11 MB |
| Requires iOS | 18.6 | 18.6 |
| Devices | **iPhone, iPad, Apple Watch** | — |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Floch](https://appshunter.io/developer/1772752224) | [Duverney Muriel](https://appshunter.io/developer/1861505676) |

## 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 |


### DuviFit

[App page](https://appshunter.io/ios/app/duvifit/id6761272248)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Early Stage Partner | $29.99 | per year |
| Support DuviFit | $22.99 | one-time |


## Frequently asked questions

### Is VO2 Max Trainer free?

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

### Is DuviFit free?

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

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

VO2 Max Trainer ships an update weekly, and DuviFit monthly. Most recently, VO2 Max Trainer was updated on October 15, 2026 and DuviFit on October 14, 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.*