Comparison

Chess Mentor vs Oddfish

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Chess Mentor

Features
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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

About

Oddfish

Features
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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

Chess Mentor4 screens
Oddfish4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

Scorecard1 real difference · 5 level
Chess Mentor versus Oddfish: the parameters behind the verdict, then further details
ParameterChess MentorOddfish
PriceFreeFree
Update frequency—Daily
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size179 MB110 MB
Age rating4+4+
DeveloperFranck HuJOHN EBENEZER JOHNSON

In-app purchases

3 purchases

Chess Mentor

Subscriptions2
  • Chess Mentor Premium$2.991 Month
  • Chess Mentor Premium$17.991 Year
One-time1
  • Chess Mentor Premium$49.99
1 purchases

Oddfish

One-time1
  • Full Oddfish$4.99

Questions

Is Chess Mentor free?
Chess Mentor is free to download, with in-app purchases available.
Is Oddfish free?
Oddfish is free to download, with in-app purchases available.
Do Chess Mentor or Oddfish have ads?
Neither Chess Mentor nor Oddfish shows ads.

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