# Impossible 7! vs Inner Clock Master

The clearest difference is update cadence: Inner Clock Master at every 4 days against Impossible 7!'s every 63 months. Impossible 7!'s advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Impossible 7! ships an update every 63 months, Inner Clock Master every 4 days. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Impossible 7! | Inner Clock Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (48 ratings)](https://appshunter.io/ios/app/impossible-7/id474216810/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 63 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 6 MB | 19 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kfirapps Limited](https://appshunter.io/developer/1131751327) | [Ryoma Yanagimoto](https://appshunter.io/developer/1681944215) |

## What reviewers say

### Impossible 7!

[App page](https://appshunter.io/ios/app/impossible-7/id474216810)

Test your speed, skill, and rhythm by counting as high as possible while avoiding numbers divisible by 7 or containing the digit 7. Features three distinct game modes to challenge players of all levels.

**Highlights:** Speed, skill, and rhythm gameplay, Avoid numbers divisible by 7, Avoid numbers containing the digit 7, Three distinct game modes, Leaderboards and Game Center support, Simple to play, difficult to master

**Features:** macOS Compatibility

**In-app purchases:** none


### Inner Clock Master

[App page](https://appshunter.io/ios/app/inner-clock-master/id6757979617)

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

**In-app purchases:** none


## Frequently asked questions

### Is Impossible 7! free?

Impossible 7! is free to download, with no in-app purchases.

### Is Inner Clock Master free?

Inner Clock Master is free to download, with no in-app purchases.

### Do Impossible 7! or Inner Clock Master have ads?

Neither Impossible 7! nor Inner Clock Master shows ads.

### Which is updated more often, Impossible 7! or Inner Clock Master?

Impossible 7! ships an update every 63 months, and Inner Clock Master every 4 days. Most recently, Impossible 7! was updated on September 23, 2026 and Inner Clock Master on September 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.*