# chess2board vs Opening Prep

The clearest difference is in-app purchases: Opening Prep at none against chess2board's 1. Opening Prep also leads on ads (none vs shown) and update cadence (every 3 days vs every 11 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. chess2board sells 1 one-off in-app purchase. Opening Prep asks for nothing beyond the download.

chess2board ships an update every 11 days, Opening Prep every 3 days. The most recent releases landed on September 15, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | chess2board | Opening Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 days | **Every 3 days** |
| Size | 39 MB | 9 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vincent Asselin](https://appshunter.io/developer/1884181293) | [Roman Bogatenko](https://appshunter.io/developer/1896131806) |

## What reviewers say

### chess2board

[App page](https://appshunter.io/ios/app/chess2board/id6760947774)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| chess2Board GM Mode | $4.99 | one-time |


### Opening Prep

[App page](https://appshunter.io/ios/app/opening-prep-chess-trainer/id6765937133)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is chess2board free?

chess2board is free to download, with in-app purchases available.

### Is Opening Prep free?

Opening Prep is free to download, with no in-app purchases.

### Do chess2board or Opening Prep have ads?

chess2board shows ads; Opening Prep does not.

### Which is updated more often, chess2board or Opening Prep?

chess2board ships an update every 11 days, and Opening Prep every 3 days. Most recently, chess2board was updated on September 15, 2026 and Opening Prep on September 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.*