# ChessBase Mobile Chess vs Blunderzone

The clearest difference is update cadence: Blunderzone at fortnightly against ChessBase Mobile Chess's every 6 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChessBase Mobile Chess sells 1 in-app purchase, starting at $3.99 per month and Blunderzone sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ChessBase Mobile Chess ships an update every 6 months, Blunderzone fortnightly. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | ChessBase Mobile Chess | Blunderzone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (18 ratings)](https://appshunter.io/ios/app/chessbase-mobile-chess/id6739000093/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 40.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | Freemium | — |
| Size | 1 MB | 183 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ChessBase GmbH](https://appshunter.io/developer/417720797) | [RANKA s.r.o.](https://appshunter.io/developer/352576574) |

## What reviewers say

### ChessBase Mobile Chess

[App page](https://appshunter.io/ios/app/chessbase-mobile-chess/id6739000093)

Access a vast chess game database, save and analyze your own games, and practice openings. This app offers advanced notation and sharing features, with a free tier and optional premium upgrades for more extensive cloud storage and search capabilities.

**Highlights:** Access 13+ million chess games, Save and sync personal game databases, Analyze games with built-in engine, Live opening book statistics, Create and practice opening repertoires, Advanced game notation and sharing, PGN file compatibility

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChessBase Premium (Monthly) | $3.99 | per month |


### Blunderzone

[App page](https://appshunter.io/ios/app/blunderzone/id6763366751)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blunderzone Basic | $3.99 | per month |
| Blunderzone Premium | $6.99 | per month |


## Frequently asked questions

### Is ChessBase Mobile Chess free?

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

### Is Blunderzone free?

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

### Do ChessBase Mobile Chess or Blunderzone have ads?

Neither ChessBase Mobile Chess nor Blunderzone shows ads.

### Which is updated more often, ChessBase Mobile Chess or Blunderzone?

ChessBase Mobile Chess ships an update every 6 months, and Blunderzone fortnightly. Most recently, ChessBase Mobile Chess was updated on October 18, 2026 and Blunderzone on October 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.*