# Chess Opening Tactics Trainer vs Book2Board

The clearest difference is price: Chess Opening Tactics Trainer at Free against Book2Board's $1.99. Chess Opening Tactics Trainer also leads on iOS requirement (16.4 vs 26.0). Book2Board's advantage is in-app purchases (none vs 7) and ads (none vs shown). On update cadence and device support there is nothing between them.

Chess Opening Tactics Trainer is free to download; Book2Board costs $1.99 up front. Chess Opening Tactics Trainer sells 7 in-app purchases, starting at $2.99 per month. Book2Board asks for nothing beyond the download.

Chess Opening Tactics Trainer ships an update every 2 months, Book2Board every 3 months. Both last shipped on November 5, 2026.

## The numbers

| Metric | Chess Opening Tactics Trainer | Book2Board |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 146 MB | 89 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Dawid Wrzesinski](https://appshunter.io/developer/1812701337) | [Rhinolabs Agency LLC](https://appshunter.io/developer/1860987245) |

## What reviewers say

### Chess Opening Tactics Trainer

[App page](https://appshunter.io/ios/app/chess-opening-tactics-trainer/id6748003312)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Espresso Subscription | $2.99 | per month |
| Flat White Subscription | $5.99 | per 3 months |
| Latte Subscription | $7.99 | per 6 months |
| Super Large Subscription | $12.99 | per year |
| Espresso | $3.99 | one-time |
| Flat White | $6.99 | one-time |
| Latte | $9.99 | one-time |


### Book2Board

[App page](https://appshunter.io/ios/app/book2board-chess-book-study/id6756503877)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chess Opening Tactics Trainer free?

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

### Is Book2Board free?

Book2Board costs $1.99, with no in-app purchases.

### Do Chess Opening Tactics Trainer or Book2Board have ads?

Chess Opening Tactics Trainer shows ads; Book2Board does not.

### Which is updated more often, Chess Opening Tactics Trainer or Book2Board?

Chess Opening Tactics Trainer ships an update every 2 months, and Book2Board every 3 months. Most recently, Chess Opening Tactics Trainer was updated on November 5, 2026 and Book2Board on November 5, 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.*