Chess Mentor vs Oddfish
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Chess Mentor
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Chess Mentor is a focused chess training app built to help you understand positions, review moves, and practice with engine feedback. Analyze chess positions, explore candidate moves, see evaluation changes, and study your games with a clean interactive board. You can play against a chess bot, set up custom positions, review saved sessions, and copy FEN or PGN for deeper study. Whether you are practicing tactics, testing ideas, reviewing a game, or learning how different moves affect the evaluation, Chess Mentor gives you practical tools to improve your chess thinking. Features - Analyze chess positions - View evaluation bar and move scores - See suggested best moves with visual arrows - Play against a chess bot with adjustable strength - Choose standard, random, or simplified pawn positions - Create custom board setups with the board editor - Save and review analysis history - Copy FEN and PGN positions - Customize board themes and piece styles - Adjust analysis depth for speed or accuracy Chess Mentor is designed for players who want a simple, useful chess study tool without distractions. Practice positions, review mistakes, and build better chess habits one move at a time. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://chessmentor.byhelyo.com/privacy
Oddfish
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Chess, but a little stranger. Oddfish starts with serious Stockfish chess, then changes one rule at a time. RattleFish loses confidence when you play well. GluttonFish grows stronger when you feed it pieces. Restfish makes moved pieces take a nap. Twenty-nine modes across six families turn a familiar board into something wonderfully peculiar. MEET GIL A small gold fish with opinions explains every mode, reacts to the game, and reviews the aftermath. PLAY YOUR WAY • Classic chess or 28 strange variations • Adjustable engine strength • Game history and PGN import • Optional move evaluation and hints • Carefully designed for iPhone and iPad Six modes—including Classic, RattleFish, FumbleFish, Restfish, GluttonFish, and ChapelFish—are free. A single Full Oddfish purchase unlocks every remaining mode. No subscription. PRIVATE BY DESIGN Everything runs on your device. Oddfish has no accounts, ads, analytics, or tracking and does not collect personal data. Stockfish plays the chess. Oddfish supplies the personality problem.
Screenshots
Verdict
The clearest difference is iOS requirement: Chess Mentor at 15.0 against Oddfish's 18.0. On price, ads, in-app purchases and device support 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. Chess Mentor sells 3 in-app purchases, starting at $2.99 per month and Oddfish sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Chess Mentor | Oddfish |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Daily |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 179 MB | 110 MB |
| Age rating | 4+ | 4+ |
| Developer | Franck Hu | JOHN EBENEZER JOHNSON |
In-app purchases
Chess Mentor
- Chess Mentor Premium$2.991 Month
- Chess Mentor Premium$17.991 Year
- Chess Mentor Premium$49.99
Oddfish
- Full Oddfish$4.99









