# Sort & Relax vs Chess knight problem

The clearest difference is in-app purchases: Chess knight problem at none against Sort & Relax's 10. Chess knight problem also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.2). On price and device support there is nothing between them.

Both are free to download. Sort & Relax sells 10 one-off in-app purchases. Chess knight problem asks for nothing beyond the download.

## The numbers

| Metric | Sort & Relax | Chess knight problem |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | — |
| Size | 154 MB | 61 MB |
| Requires iOS | 15.2 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [holudi e.U.](https://appshunter.io/developer/1705701048) | [Arkadiusz Fryszkowski](https://appshunter.io/developer/1142676058) |

## What reviewers say

### Sort & Relax

[App page](https://appshunter.io/ios/app/sort-and-relax/id6464299054)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Animal Faces Theme | $1.99 | one-time |
| 3D Balls Theme | $1.99 | one-time |
| Fruit Halves Theme | $1.99 | one-time |
| US Flags Theme I | $1.99 | one-time |
| US Flags Theme II | $1.99 | one-time |
| World Flags Theme I | $1.99 | one-time |
| Christmas Theme I | $1.99 | one-time |
| 25 containers | $3.99 | one-time |
| Level Unlock | $4.99 | one-time |
| 100 containers | $9.99 | one-time |


### Chess knight problem

[App page](https://appshunter.io/ios/app/chess-knight-problem/id6752958315)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sort & Relax free?

Sort & Relax is free to download, with in-app purchases available.

### Is Chess knight problem free?

Chess knight problem is free to download, with no in-app purchases.

### Do Sort & Relax or Chess knight problem have ads?

Sort & Relax shows ads; Chess knight problem does not.

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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.*