# VO2 Max vs HRR Tracker

The clearest difference is in-app purchases: HRR Tracker at none against VO2 Max's 3. HRR Tracker also leads on iOS requirement (15.1 vs 18.0). VO2 Max's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. VO2 Max sells 3 in-app purchases, starting at $2.99 per month. HRR Tracker asks for nothing beyond the download.

## The numbers

| Metric | VO2 Max | HRR Tracker |
| --- | --- | --- |
| Price | Free | Free |
| 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** | Yes |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 36 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bernhard Hering](https://appshunter.io/developer/327542085) | [Annalisa Nash](https://appshunter.io/developer/1889875816) |

## 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 |


### HRR Tracker

[App page](https://appshunter.io/ios/app/hrr-tracker/id6761481549)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is VO2 Max free?

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

### Is HRR Tracker free?

HRR Tracker is free to download, with no in-app purchases.

### Do VO2 Max or HRR Tracker have ads?

HRR Tracker shows ads; VO2 Max does not.

---

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