# Chess Endgame Studies vs Openings Mastermind

The clearest difference is review sentiment: Chess Endgame Studies at 93% against Openings Mastermind's 50%. Chess Endgame Studies also leads on rating (4.8 vs 4.3) and ratings volume (117 vs 6). Openings Mastermind's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Chess Endgame Studies sells 1 one-off in-app purchase. Openings Mastermind asks for nothing beyond the download.

Chess Endgame Studies holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Chess Endgame Studies has 117 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 93% of Chess Endgame Studies's written reviews are positive against 50% of Openings Mastermind's.

Chess Endgame Studies ships an update every 2 months, Openings Mastermind fortnightly. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Chess Endgame Studies | Openings Mastermind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (117 ratings)](https://appshunter.io/ios/app/chess-endgame-studies/id1129843993/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/openings-mastermind/id6448386251/reviews) |
| Number of ratings | **117** | 6 |
| Positive reviews | **93.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 42 MB | 88 MB |
| Requires iOS | **8.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chess King](https://appshunter.io/developer/1096660597) | [Christian Heise](https://appshunter.io/developer/1632898424) |

## What reviewers say

### Chess Endgame Studies

[App page](https://appshunter.io/ios/app/chess-endgame-studies/id1129843993)

Master chess endgames with a curated collection of instructive studies and exercises. This app provides hints, explanations, and feedback to help you improve tactical skills and consolidate knowledge.

**Highlights:** 950+ endgame compositions, 900+ subsidiary exercises, Unique 5x5 mini-position hints, Interactive coach with hints and explanations, Refutation of common mistakes, Play positions against the computer, Tracks ELO rating changes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Course | $3.99 | one-time |


### 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 Chess Endgame Studies free?

Chess Endgame Studies is free to download, with in-app purchases available.

### Is Openings Mastermind free?

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

### Which has better reviews, Chess Endgame Studies or Openings Mastermind?

Chess Endgame Studies is rated higher. Chess Endgame Studies averages 4.8 out of 5 from 117 ratings, while Openings Mastermind averages 4.3 from 6 ratings.

### Do Chess Endgame Studies or Openings Mastermind have ads?

Neither Chess Endgame Studies nor Openings Mastermind shows ads.

### Which is updated more often, Chess Endgame Studies or Openings Mastermind?

Chess Endgame Studies ships an update every 2 months, and Openings Mastermind fortnightly. Most recently, Chess Endgame Studies was updated on October 19, 2026 and Openings Mastermind on October 7, 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.*