# OpeningTree vs Openings Mastermind

The clearest difference is price: Openings Mastermind at Free against OpeningTree's $0.99. Openings Mastermind also leads on update cadence (fortnightly vs every 2 months). OpeningTree's advantage is review sentiment (83% vs 50%) and ratings volume (31 vs 6). On rating, ads, in-app purchases and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.4 for OpeningTree against 4.3 for Openings Mastermind. That said, the two scores are not equally well evidenced: OpeningTree has 31 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 83% of OpeningTree's written reviews are positive against 50% of Openings Mastermind's.

OpeningTree ships an update every 2 months, Openings Mastermind fortnightly. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | OpeningTree | Openings Mastermind |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.4 (31 ratings)](https://appshunter.io/ios/app/openingtree-chess-openings/id882614935/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/openings-mastermind/id6448386251/reviews) |
| Number of ratings | **31** | 6 |
| Positive reviews | **82.6% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 52 MB | 88 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michael Adams](https://appshunter.io/developer/743520896) | [Christian Heise](https://appshunter.io/developer/1632898424) |

## 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


### Openings Mastermind

[App page](https://appshunter.io/ios/app/openings-mastermind/id6448386251)

Master chess openings with this app. Import studies, explore with advanced engines, and practice specific lines through repetition. Track your progress and improve your game.

**Highlights:** Import Lichess Studies or PGNs, Explore openings with Stockfish 15, Practice openings by repetition, Smart practice queue, Track learning progress

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OpeningTree free?

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

### Is Openings Mastermind free?

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

### Which has better reviews, OpeningTree or Openings Mastermind?

OpeningTree is rated higher. OpeningTree averages 4.4 out of 5 from 31 ratings, while Openings Mastermind averages 4.3 from 6 ratings.

### Do OpeningTree or Openings Mastermind have ads?

Neither OpeningTree nor Openings Mastermind shows ads.

### Which is updated more often, OpeningTree or Openings Mastermind?

OpeningTree ships an update every 2 months, and Openings Mastermind fortnightly. Most recently, OpeningTree was updated on September 22, 2026 and Openings Mastermind on September 19, 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.*