# OpeningTree vs iChessOne

The clearest difference is price: iChessOne at Free against OpeningTree's $0.99. iChessOne also leads on review sentiment (100% vs 83%). OpeningTree's advantage is rating (4.4 vs 4.0) and ratings volume (31 vs 2). On update cadence, ads, in-app purchases and device support there is nothing between them.

iChessOne is free to download; OpeningTree costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

OpeningTree holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: OpeningTree has 31 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 83% of OpeningTree's written reviews are positive against 100% of iChessOne'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, iChessOne every 6 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OpeningTree | iChessOne |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.4 (31 ratings)](https://appshunter.io/ios/app/openingtree-chess-openings/id882614935/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/ichessone/id6447067426/reviews) |
| Number of ratings | **31** | 2 |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 52 MB | 97 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Michael Adams](https://appshunter.io/developer/743520896) | [Janusz Lisowski](https://appshunter.io/developer/1680192609) |

## 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


### iChessOne

[App page](https://appshunter.io/ios/app/ichessone/id6447067426)

Experience traditional chess with a smart electronic board. Play online, train with AI, analyze games, and customize your experience with interactive LEDs. It connects the feel of physical pieces with the convenience of modern software for an enhanced chess ecosystem.

**Highlights:** Play online on a real chessboard, Offline play and Stockfish training, Game analysis and PGN export, Interactive LED support, Advanced personalization settings, Board management and firmware updates, Reliable wireless Bluetooth connection

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

**In-app purchases:** none


## Frequently asked questions

### Is OpeningTree free?

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

### Is iChessOne free?

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

### Which has better reviews, OpeningTree or iChessOne?

OpeningTree is rated higher. OpeningTree averages 4.4 out of 5 from 31 ratings, while iChessOne averages 4.0 from 2 ratings.

### Do OpeningTree or iChessOne have ads?

Neither OpeningTree nor iChessOne shows ads.

### Which is updated more often, OpeningTree or iChessOne?

OpeningTree ships an update every 2 months, and iChessOne every 6 weeks. Most recently, OpeningTree was updated on October 26, 2026 and iChessOne on October 24, 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.*