# OpeningTree vs Chess Openings Explorer Pro

OpeningTree and Chess Openings Explorer Pro both sit at 4.4 stars, but that hides the real split: 83% of OpeningTree's written reviews are positive against 55% of Chess Openings Explorer Pro's. OpeningTree also leads on price ($0.99 vs $3.99). Chess Openings Explorer Pro's advantage is ratings volume (357 vs 31) and chart position (#62 vs unranked). On rating, ads, in-app purchases and monetization model there is nothing between them.

OpeningTree costs $0.99 and Chess Openings Explorer Pro $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chess Openings Explorer Pro holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Chess Openings Explorer Pro has 357 ratings behind it against 31, so its average is the more settled of the two. Written reviews complicate that: 83% of OpeningTree's written reviews are positive against 55% of Chess Openings Explorer Pro's, so the app with the better star average is not the one people write more warmly about.

OpeningTree ships an update every 2 months, Chess Openings Explorer Pro every 3 weeks. Both last shipped on October 29, 2026.

## The numbers

| Metric | OpeningTree | Chess Openings Explorer Pro |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | [4.4 (31 ratings)](https://appshunter.io/ios/app/openingtree-chess-openings/id882614935/reviews) | **[4.6 (357 ratings)](https://appshunter.io/ios/app/chess-openings-explorer-pro/id1083431778/reviews)** |
| Number of ratings | 31 | **357** |
| Positive reviews | **83.3% of reviews** | 54.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#62** |
| Size | 52 MB | 40 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Adams](https://appshunter.io/developer/743520896) | [Emmanuel Mathis](https://appshunter.io/developer/892041879) |

## 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


### Chess Openings Explorer Pro

[App page](https://appshunter.io/ios/app/chess-openings-explorer-pro/id1083431778)

**Currently charting:** #62 Top Paid · Board, #159 Top Paid · Puzzle (US App Store)

Master chess openings with a comprehensive dictionary and analysis of over 2 million Grandmaster games. Test your knowledge with interactive quizzes and analyze positions using a powerful built-in engine.

**Highlights:** Chess opening dictionary, Grandmaster game analysis, Interactive quiz modes, Position win/loss/draw stats, Built-in chess engine, PGN export

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

**In-app purchases:** none

**What reviewers like**

- 📚 Extensive database of grandmaster games (2 million+)
- 🎯 Intuitive opening explorer interface
- 📊 Clear visualization of move statistics and win rates
- 🎮 Easy access to replay master games
- 💡 Practical and pedagogical approach to learning openings

**What reviewers complain about**

- ⚠️ Limited depth - only covers ~5 moves in most lines
- ❌ Lacks built-in chess engine for analysis
- 😕 Confusing user interface for beginners
- 📖 Insufficient documentation and help instructions
- 🤷 Unclear what statistics and percentages mean

**Reported bugs**

- Games fail to load with 'failed to load games' error
- Wrong position displayed when accessing games from position
- Text truncation on opening names (iPhone)
- Incompatibility with older devices (iPad 4)
- App crashes or freezes

**Requested features**

- Built-in chess engine for position evaluation
- Ability to play own moves and get engine feedback
- Play openings against computer opponent
- PGN import functionality
- Quiz mode by opening


## Frequently asked questions

### Is OpeningTree free?

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

### Is Chess Openings Explorer Pro free?

Chess Openings Explorer Pro costs $3.99, with no in-app purchases.

### Which has better reviews, OpeningTree or Chess Openings Explorer Pro?

Chess Openings Explorer Pro is rated higher. OpeningTree averages 4.4 out of 5 from 31 ratings, while Chess Openings Explorer Pro averages 4.6 from 357 ratings.

### Do OpeningTree or Chess Openings Explorer Pro have ads?

Neither OpeningTree nor Chess Openings Explorer Pro shows ads.

### Which is updated more often, OpeningTree or Chess Openings Explorer Pro?

OpeningTree ships an update every 2 months, and Chess Openings Explorer Pro every 3 weeks. Most recently, OpeningTree was updated on October 29, 2026 and Chess Openings Explorer Pro on October 29, 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.*