# OpeningTree vs ChessBase Mobile Chess

The clearest difference is price: ChessBase Mobile Chess at Free against OpeningTree's $0.99. OpeningTree's advantage is review sentiment (83% vs 39%) and rating (4.4 vs 2.9). On ratings volume, ads, device support and iOS requirement there is nothing between them.

ChessBase Mobile Chess is free to download; OpeningTree costs $0.99 up front. ChessBase Mobile Chess sells 1 in-app purchase, starting at $3.99 per month. OpeningTree asks for nothing beyond the download.

OpeningTree holds the better App Store score, 4.4 against 2.9. Both are backed by a comparable volume of ratings — 31 and 18 respectively. Written reviews point the same way: 83% of OpeningTree's written reviews are positive against 39% of ChessBase Mobile Chess's.

OpeningTree ships an update every 2 months, ChessBase Mobile Chess every 6 months. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | OpeningTree | ChessBase Mobile Chess |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.4 (31 ratings)](https://appshunter.io/ios/app/openingtree-chess-openings/id882614935/reviews)** | [2.9 (18 ratings)](https://appshunter.io/ios/app/chessbase-mobile-chess/id6739000093/reviews) |
| Number of ratings | **31** | 18 |
| Positive reviews | **82.6% of reviews** | 38.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Paid | **Freemium** |
| Size | 52 MB | 1 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Adams](https://appshunter.io/developer/743520896) | [ChessBase GmbH](https://appshunter.io/developer/417720797) |

## What reviewers say

### OpeningTree

[App page](https://appshunter.io/ios/app/openingtree-chess-openings/id882614935)

Explore chess openings with an extensive opening book and engine analysis. Analyze your games, create custom lines, and study moves from high-rated players. Accessible for visually impaired users.

**Highlights:** Extensive opening book, Crafty engine analysis, Load and analyze PGN games, Create custom move lines, Accessible for visually impaired, Mark moves with colors, Save board to PGN

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is OpeningTree free?

OpeningTree costs $0.99, with no in-app purchases.

### Is ChessBase Mobile Chess free?

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

### Which has better reviews, OpeningTree or ChessBase Mobile Chess?

OpeningTree is rated higher. OpeningTree averages 4.4 out of 5 from 31 ratings, while ChessBase Mobile Chess averages 2.9 from 18 ratings.

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

Neither OpeningTree nor ChessBase Mobile Chess shows ads.

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

OpeningTree ships an update every 2 months, and ChessBase Mobile Chess every 6 months. Most recently, OpeningTree was updated on September 22, 2026 and ChessBase Mobile Chess on September 21, 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.*