# Cube Guide vs Chess Opening Book

The clearest difference is in-app purchases: Cube Guide at none against Chess Opening Book's 1. Chess Opening Book's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Chess Opening Book sells 1 in-app purchase, starting at $1.99 per month. Cube Guide asks for nothing beyond the download.

## The numbers

| Metric | Cube Guide | Chess Opening Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Size | 36 MB | 12 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Pavel Pakhmutov](https://appshunter.io/developer/1891130896) | [Mert Kuplulu](https://appshunter.io/developer/6809224649) |

## What reviewers say

### Cube Guide

[App page](https://appshunter.io/ios/app/cube-guide/id6761728595)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Cube Guide free?

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

### Is Chess Opening Book free?

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

### Do Cube Guide or Chess Opening Book have ads?

Cube Guide shows ads; Chess Opening Book 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.*