# Chess9 vs Simple Chess Trainer

The clearest difference is in-app purchases: Chess9 at none against Simple Chess Trainer's 1. Chess9 also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Simple Chess Trainer sells 1 one-off in-app purchase. Chess9 asks for nothing beyond the download.

## The numbers

| Metric | Chess9 | Simple Chess Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Size | 11 MB | 8 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Shashwat Patel](https://appshunter.io/developer/1873309489) | [Oleksandr Ioffe](https://appshunter.io/developer/1895445780) |

## What reviewers say

### Chess9

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Chess Trainer

[App page](https://appshunter.io/ios/app/simple-chess-trainer/id6766382515)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove All Adds (One-Time) | $12.99 | one-time |


## Frequently asked questions

### Is Chess9 free?

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

### Is Simple Chess Trainer free?

Simple Chess Trainer is free to download, with in-app purchases available.

### Do Chess9 or Simple Chess Trainer have ads?

Simple Chess Trainer shows ads; Chess9 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.*