# VO2 Max vs VO2Max Hiit Workout

The clearest difference is rating: VO2 Max at 3.8 against VO2Max Hiit Workout's 2.0. VO2 Max also leads on ads (none vs shown) and ratings volume (131 vs 1). VO2Max Hiit Workout's advantage is in-app purchases (none vs 3) and iOS requirement (15.6 vs 18.0). On price, update cadence 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. VO2Max Hiit Workout asks for nothing beyond the download.

VO2 Max holds the better App Store score, 3.8 against 2.0. That said, the two scores are not equally well evidenced: VO2 Max has 131 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | VO2 Max | VO2Max Hiit Workout |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (131 ratings)](https://appshunter.io/ios/app/vo2-max-widget-notifications/id1394840943/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/vo2max-hiit-workout/id6475713309/reviews) |
| Number of ratings | **131** | 1 |
| Positive reviews | 26.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 11 MB | 104 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Bernhard Hering](https://appshunter.io/developer/327542085) | [Unscripted Engineering](https://appshunter.io/developer/1635849108) |

## 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 |


### VO2Max Hiit Workout

[App page](https://appshunter.io/ios/app/vo2max-hiit-workout/id6475713309)

Boost your aerobic capacity with science-backed HIIT protocols. This app offers precise, customizable interval training sessions designed by athletes. Train longer with optimized battery usage.

**Highlights:** Science-backed HIIT protocols, Customizable workouts, Precise interval timers, Low battery drain, Multiple training types (Norwegian 4x4, Tabata, Wingate)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VO2 Max free?

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

### Is VO2Max Hiit Workout free?

VO2Max Hiit Workout is free to download, with no in-app purchases.

### Which has better reviews, VO2 Max or VO2Max Hiit Workout?

VO2 Max is rated higher. VO2 Max averages 3.8 out of 5 from 131 ratings, while VO2Max Hiit Workout averages 2.0 from 1 ratings.

### Do VO2 Max or VO2Max Hiit Workout have ads?

VO2Max Hiit Workout shows ads; VO2 Max does not.

### Which is updated more often, VO2 Max or VO2Max Hiit Workout?

VO2 Max ships an update every 10 days, and VO2Max Hiit Workout every 10 days. Most recently, VO2 Max was updated on October 24, 2026 and VO2Max Hiit Workout on October 22, 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.*