Lazy Chess vs Openings Mastermind
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Lazy Chess
This chess game offers a unique twist by presenting players with only two AI-selected moves to choose from each turn. It's designed for both casual players and enthusiasts, making chess more accessible and fun. Compete against AI or friends, unlock new themes, and improve your skills through unique scenarios.
- Choose from two AI-selected moves
- Compete against AI or online friends
- Unlock new themes and settings
- Play unique chess scenarios
- Leaderboard rankings
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Lazy Chess is a free, non-profit game created for casual players and enthusiasts alike, where players, at worst, make the second best move available to them. On average, there are more than 30 legal chess moves available to a player in a turn, creating vigintillions of possibilities throughout a game. Lazy Chess compresses that by having you choose only two in a given turn selected by Stockfish, the most robust chess engine in the world. The catch? You won’t know which move is the best! Learn and have fun while you compete against a highly skilled AI or online friends and random opponents. Unlock new themes and settings that can change how many options you choose from or the difficulty of the AI. Hone your chess skills while you move up in the leaderboards and play unique scenarios of famous board states provided from some of the world's most active grandmasters. Lazy Chess is open source and available on GitHub. It was developed by Cinq-Mars Media, an educational non-profit with projects and games featured at E3, PAX and festivals worldwide.
Openings Mastermind
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.
- Import Lichess Studies or PGNs
- Explore openings with Stockfish 15
- Practice openings by repetition
- Smart practice queue
- Track learning progress
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Get ready to take your chess game to the next level with Openings Mastermind, the ultimate chess opening app! Some of the features include: - Import Lichess Studies or custom PGNs - Explore openings with Stockfish 17 and the Lichess position database - Practice openings by repetition against your own custom openings database - Take advantage of the smart practice queue and improve your learning - Observe your learning progress in different openings With our app, you can take your opening game to the next level by practicing against the specific lines you want to master. Whether you're a beginner or an experienced player, our app is the perfect tool to help you improve your opening moves and become a better chess player. Planned Features: - Continue against engine, after study line ends - Analysis of your games from Lichess and Chess.com compared to your openings database
Screenshots
Verdict
The clearest difference is in-app purchases: Openings Mastermind at none against Lazy Chess's 1. Openings Mastermind also leads on ads (none vs shown). Lazy Chess's advantage is ratings volume (67 vs 6) and iOS requirement (11.0 vs 18.6). On price, rating, review sentiment and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lazy Chess sells 1 one-off in-app purchase. Openings Mastermind asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.4 for Lazy Chess against 4.3 for Openings Mastermind. That said, the two scores are not equally well evidenced: Lazy Chess has 67 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 56% of Lazy Chess's written reviews are positive against 50% of Openings Mastermind's.
Lazy Chess ships an update every 3 weeks, Openings Mastermind fortnightly. Both last shipped on September 19, 2026.
| Parameter | Lazy Chess | Openings Mastermind |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (67 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 55.6% of reviews — better | 50.0% of reviews |
| Number of ratings | 67 — better | 6 |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 35 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | Cinq-Mars Media | Christian Heise |
Customer experience
Lazy Chess
Openings Mastermind
In-app purchases
Lazy Chess
- Ad Free + Full Game$2.99
Openings Mastermind
No in-app purchases
Questions
Is Lazy Chess free?
Is Openings Mastermind free?
Which has better reviews, Lazy Chess or Openings Mastermind?
Do Lazy Chess or Openings Mastermind have ads?
Which is updated more often, Lazy Chess or Openings Mastermind?
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