# 75 Days Challenge vs VO2Stats

The clearest difference is price: 75 Days Challenge at Free against VO2Stats's $0.99. 75 Days Challenge also leads on iOS requirement (12.4 vs 17.0). VO2Stats's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

75 Days Challenge is free to download; VO2Stats costs $0.99 up front. 75 Days Challenge sells 1 one-off in-app purchase. VO2Stats asks for nothing beyond the download.

## The numbers

| Metric | 75 Days Challenge | VO2Stats |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.4 (46 ratings)](https://appshunter.io/ios/app/75-days-challenge-tracker/id6451491151/reviews)** | — |
| Number of ratings | **46** | — |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 1 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Muhammed Asaad Nadeem](https://appshunter.io/developer/1601934665) | [Bramhand Consultancy Services Inc.](https://appshunter.io/developer/6784746659) |

## What reviewers say

### 75 Days Challenge

[App page](https://appshunter.io/ios/app/75-days-challenge-tracker/id6451491151)

This app guides users through a 75-day fitness and mental resilience challenge. It offers comprehensive workout routines, progress tracking, and features to build discipline and self-confidence. It also includes options for the 75 Soft Challenge and group fitness.

**Highlights:** Comprehensive fitness routines, Progress tracking, Discipline building, Mental resilience development, Habit creation, 75 Soft Challenge integration, Accountability partner

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 75 Day Challenge | $4.99 | one-time |


### VO2Stats

[App page](https://appshunter.io/ios/app/vo2stats-vo2-max-calculator/id6796164313)

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

**In-app purchases:** none


## Frequently asked questions

### Is 75 Days Challenge free?

75 Days Challenge is free to download, with in-app purchases available.

### Is VO2Stats free?

VO2Stats costs $0.99, with no in-app purchases.

### Do 75 Days Challenge or VO2Stats have ads?

Neither 75 Days Challenge nor VO2Stats shows ads.

---

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