# OpeningTree vs Chess Opening Trainer

The clearest difference is review sentiment: OpeningTree at 83% against Chess Opening Trainer's 14%. OpeningTree also leads on rating (4.4 vs 1.4) and ads (none vs shown). Chess Opening Trainer's advantage is price (Free vs $0.99) and iOS requirement (9.0 vs 15.6). On in-app purchases and device support there is nothing between them.

Chess Opening Trainer 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 1.4. Both are backed by a comparable volume of ratings — 31 and 7 respectively. Written reviews point the same way: 83% of OpeningTree's written reviews are positive against 14% of Chess Opening Trainer's.

OpeningTree ships an update every 2 months, Chess Opening Trainer every 4 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | OpeningTree | Chess Opening Trainer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.4 (31 ratings)](https://appshunter.io/ios/app/openingtree-chess-openings/id882614935/reviews)** | [1.4 (7 ratings)](https://appshunter.io/ios/app/chess-opening-trainer/id1106058837/reviews) |
| Number of ratings | **31** | 7 |
| Positive reviews | **83.3% of reviews** | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | **Ad-supported** |
| Size | 52 MB | 33 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Adams](https://appshunter.io/developer/743520896) | [Propersh LLC](https://appshunter.io/developer/862587473) |

## 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 Opening Trainer

[App page](https://appshunter.io/ios/app/chess-opening-trainer/id1106058837)

Learn chess openings with a simplified interface that analyzes millions of games. Moves are scored and ordered by popularity, making study straightforward. Test your knowledge with built-in quizzes.

**Highlights:** Simplified interface, Move scoring based on popularity, Analysis of over 2 million games, Straightforward study approach, Opening knowledge testing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpeningTree free?

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

### Is Chess Opening Trainer free?

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

### Which has better reviews, OpeningTree or Chess Opening Trainer?

OpeningTree is rated higher. OpeningTree averages 4.4 out of 5 from 31 ratings, while Chess Opening Trainer averages 1.4 from 7 ratings.

### Do OpeningTree or Chess Opening Trainer have ads?

Chess Opening Trainer shows ads; OpeningTree does not.

### Which is updated more often, OpeningTree or Chess Opening Trainer?

OpeningTree ships an update every 2 months, and Chess Opening Trainer every 4 months. Most recently, OpeningTree was updated on November 1, 2026 and Chess Opening Trainer on November 2, 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.*