# Openings Mastermind vs Invisible Chess

The clearest difference is price: Openings Mastermind at Free against Invisible Chess's $3.99. Invisible Chess's advantage is iOS requirement (15.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

Openings Mastermind is free to download; Invisible Chess costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Openings Mastermind | Invisible Chess |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/openings-mastermind/id6448386251/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free | — |
| Size | 88 MB | 5 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Christian Heise](https://appshunter.io/developer/1632898424) | [APOSTOLOS KOUTIS](https://appshunter.io/developer/1877366534) |

## What reviewers say

### 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


### Invisible Chess

[App page](https://appshunter.io/ios/app/invisible-chess-master-void/id6759197334)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Openings Mastermind free?

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

### Is Invisible Chess free?

Invisible Chess costs $3.99, with no in-app purchases.

### Do Openings Mastermind or Invisible Chess have ads?

Neither Openings Mastermind nor Invisible Chess shows ads.

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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.*