# 75 Days Challenge vs Sleep Session

The clearest difference is iOS requirement: 75 Days Challenge at 12.4 against Sleep Session's 26.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 75 Days Challenge sells 1 one-off in-app purchase and Sleep Session sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

75 Days Challenge ships an update every 3 weeks, Sleep Session every 2 weeks. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | 75 Days Challenge | Sleep Session |
| --- | --- | --- |
| Price | Free | Free |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 492 MB |
| Requires iOS | **12.4** | 26.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Muhammed Asaad Nadeem](https://appshunter.io/developer/1601934665) | [Cristiano Perdigao](https://appshunter.io/developer/1864615733) |

## 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 |


### Sleep Session

[App page](https://appshunter.io/ios/app/sleep-session/id6760857671)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is 75 Days Challenge free?

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

### Is Sleep Session free?

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

### Do 75 Days Challenge or Sleep Session have ads?

Neither 75 Days Challenge nor Sleep Session shows ads.

### Which is updated more often, 75 Days Challenge or Sleep Session?

75 Days Challenge ships an update every 3 weeks, and Sleep Session every 2 weeks. Most recently, 75 Days Challenge was updated on October 7, 2026 and Sleep Session on October 11, 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.*