# Chess Middlegame IV vs Openings Mastermind

The clearest difference is rating: Chess Middlegame IV at 5.0 against Openings Mastermind's 4.3. Chess Middlegame IV also leads on iOS requirement (8.0 vs 18.6). Openings Mastermind's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs every 4 months). On price, ratings volume, ads and device support there is nothing between them.

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

Chess Middlegame IV holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 10 and 6 respectively.

Chess Middlegame IV ships an update every 4 months, Openings Mastermind fortnightly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Chess Middlegame IV | Openings Mastermind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/chess-middlegame-iv/id1130247901/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/openings-mastermind/id6448386251/reviews) |
| Number of ratings | **10** | 6 |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 44 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 Middlegame IV

[App page](https://appshunter.io/ios/app/chess-middlegame-iv/id1130247901)

This app offers a comprehensive chess middlegame training course designed by a Grandmaster. It provides interactive lessons, practice exercises with hints and refutations, and theoretical explanations to improve your strategic understanding and tactical skills. The course covers various openings and allows you to play against the computer.

**Highlights:** Grandmaster-designed middlegame course, Interactive theoretical lessons, Practice exercises with hints and refutations, Covers various openings, Play against the computer, Monitors ELO rating changes, Offline play

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full course | $7.99 | 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 Middlegame IV free?

Chess Middlegame IV 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 Middlegame IV or Openings Mastermind?

Chess Middlegame IV is rated higher. Chess Middlegame IV averages 5.0 out of 5 from 10 ratings, while Openings Mastermind averages 4.3 from 6 ratings.

### Do Chess Middlegame IV or Openings Mastermind have ads?

Neither Chess Middlegame IV nor Openings Mastermind shows ads.

### Which is updated more often, Chess Middlegame IV or Openings Mastermind?

Chess Middlegame IV ships an update every 4 months, and Openings Mastermind fortnightly. Most recently, Chess Middlegame IV was updated on November 2, 2026 and Openings Mastermind on November 3, 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.*