# DigiChess vs Chess Opening Book

DigiChess and Chess Opening Book are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. DigiChess sells 1 one-off in-app purchase and Chess Opening Book sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | DigiChess | Chess Opening Book |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Monetization | Paid | — |
| Size | 24 MB | 12 MB |
| Requires iOS | 15.2 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Solnatrix Inc.](https://appshunter.io/developer/1642997323) | [Mert Kuplulu](https://appshunter.io/developer/6809224649) |

## What reviewers say

### DigiChess

[App page](https://appshunter.io/ios/app/digichess/id1642997321)

Instantly convert chess board images into interactive digital representations. An AI recognizes pieces, eliminating manual setup and saving preparation time. Export positions to analysis engines or popular chess platforms.

**Highlights:** Image to digital board conversion, AI piece recognition, FEN description generation, Save and edit positions, Export to Lichess/Chess.com

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DigiChess Premium No Advertisements | $7.99 | one-time |


### Chess Opening Book

[App page](https://appshunter.io/ios/app/chess-opening-book/id6809224647)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Black repertoire | $1.99 | per month |


## Frequently asked questions

### Is DigiChess free?

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

### Is Chess Opening Book free?

Chess Opening Book is free to download, with in-app purchases available.

### Do DigiChess or Chess Opening Book have ads?

Neither DigiChess nor Chess Opening Book 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.*