# ChessKnock vs SixFour Chess

The clearest difference is in-app purchases: SixFour Chess at none against ChessKnock's 1. ChessKnock's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. ChessKnock sells 1 one-off in-app purchase. SixFour Chess asks for nothing beyond the download.

## The numbers

| Metric | ChessKnock | SixFour Chess |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 36 MB | 10 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [West East Labs LLC](https://appshunter.io/developer/1699931923) | [Adouani SAS](https://appshunter.io/developer/1635325565) |

## What reviewers say

### ChessKnock

[App page](https://appshunter.io/ios/app/chessknock/id6746472712)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $1.99 | one-time |


### SixFour Chess

[App page](https://appshunter.io/ios/app/sixfour-chess/id6755084189)

**In-app purchases:** none


## Frequently asked questions

### Is ChessKnock free?

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

### Is SixFour Chess free?

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

### Do ChessKnock or SixFour Chess have ads?

Neither ChessKnock nor SixFour Chess 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.*