# Chess9 vs Koch

The clearest difference is iOS requirement: Koch at 15.1 against Chess9's 17.6. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Chess9 | Koch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 11 MB | 43 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Shashwat Patel](https://appshunter.io/developer/1873309489) | [itch koch](https://appshunter.io/developer/1893800961) |

## What reviewers say

### Chess9

[App page](https://appshunter.io/ios/app/chess9/id6758634392)

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

**In-app purchases:** none


### Koch

[App page](https://appshunter.io/ios/app/koch-chess/id6762317677)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chess9 free?

Chess9 is free to download, with no in-app purchases.

### Is Koch free?

Koch is free to download, with no in-app purchases.

### Do Chess9 or Koch have ads?

Neither Chess9 nor Koch shows ads.

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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.*