# Ryddle vs ChessBook Reader

The clearest difference is in-app purchases: ChessBook Reader at none against Ryddle's 4. Ryddle's advantage is update cadence (every 9 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ryddle sells 4 in-app purchases, starting at $6.99 per month. ChessBook Reader asks for nothing beyond the download.

Ryddle ships an update every 9 days, ChessBook Reader monthly. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Ryddle | ChessBook Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Monthly |
| Size | 42 MB | 133 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 12+ | 4+ |
| Developer | [SageSight](https://appshunter.io/developer/1757306695) | [Vu-Hung Quan](https://appshunter.io/developer/6781876708) |

## What reviewers say

### Ryddle

[App page](https://appshunter.io/ios/app/ryddle-access-all-ai-models/id6667092588)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Monthly | $6.99 | per month |
| Plus Monthly | $19.99 | per month |
| Monthly | $19.99 | per month |
| Annual | $199.99 | per year |


### ChessBook Reader

[App page](https://appshunter.io/ios/app/chessbook-reader/id6782721529)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ryddle free?

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

### Is ChessBook Reader free?

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

### Do Ryddle or ChessBook Reader have ads?

Neither Ryddle nor ChessBook Reader shows ads.

### Which is updated more often, Ryddle or ChessBook Reader?

Ryddle ships an update every 9 days, and ChessBook Reader monthly. Most recently, Ryddle was updated on October 27, 2026 and ChessBook Reader on October 28, 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.*