# Chess Openings vs OpeningBook

Chess Openings and OpeningBook 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. Chess Openings sells 3 in-app purchases, starting at $7.99 per month and OpeningBook sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Chess Openings | OpeningBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/chess-openings-chessmate/id6780793638/reviews)** | — |
| Number of ratings | **14** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Freemium | — |
| Size | 143 MB | 4 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [wyverselabs](https://appshunter.io/developer/1895432648) | [Zhenghong Peng](https://appshunter.io/developer/6797348186) |

## What reviewers say

### Chess Openings

[App page](https://appshunter.io/ios/app/chess-openings-chessmate/id6780793638)

Master chess openings by turning theory into muscle memory. Study curated lines with clear explanations, practice from real board positions, and review before it fades. Challenge your recall without engine clutter to expand your repertoire.

**Highlights:** Study curated opening lines, Practice from board positions, Review learned lines, Challenge recall, Track progress, Clear move explanations

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chessmate Premium Monthly | $7.99 | per month |
| Chessmate Premium Yearly | $34.99 | per year |
| Chessmate Premium Lifetime | $79.99 | one-time |


### OpeningBook

[App page](https://appshunter.io/ios/app/openingbook/id6805625863)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Training Mode | $3.99 | one-time |


## Frequently asked questions

### Is Chess Openings free?

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

### Is OpeningBook free?

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

### Do Chess Openings or OpeningBook have ads?

Neither Chess Openings nor OpeningBook 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.*