# VO2 Max vs myBiorhythm

The clearest difference is price: VO2 Max at Free against myBiorhythm's $0.99. VO2 Max also leads on update cadence (every 2 weeks vs monthly). myBiorhythm's advantage is in-app purchases (none vs 3) and iOS requirement (15.0 vs 18.0). On ads and device support there is nothing between them.

VO2 Max is free to download; myBiorhythm costs $0.99 up front. VO2 Max sells 3 in-app purchases, starting at $2.99 per month. myBiorhythm asks for nothing beyond the download.

VO2 Max ships an update every 2 weeks, myBiorhythm monthly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | VO2 Max | myBiorhythm |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.8 (131 ratings)](https://appshunter.io/ios/app/vo2-max-widget-notifications/id1394840943/reviews)** | — |
| Number of ratings | **131** | — |
| Positive reviews | 26.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 3 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Bernhard Hering](https://appshunter.io/developer/327542085) | [xis int. ag](https://appshunter.io/developer/331701100) |

## 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 | $22.99 | per year |
| Lifetime Access | $79.99 | one-time |


### myBiorhythm

[App page](https://appshunter.io/ios/app/mybiorhythm/id6463790890)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is VO2 Max free?

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

### Is myBiorhythm free?

myBiorhythm costs $0.99, with no in-app purchases.

### Do VO2 Max or myBiorhythm have ads?

Neither VO2 Max nor myBiorhythm shows ads.

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

VO2 Max ships an update every 2 weeks, and myBiorhythm monthly. Most recently, VO2 Max was updated on October 29, 2026 and myBiorhythm on October 25, 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.*