Chess Blunder Trainer

4.7
56 reviews
1K+
Downloads
Content rating
Everyone
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About this game

Analyze your chess blunders from your own games as interactive puzzles.

You can automatically import your games from the online platforms Chess.com and Lichess, or from your personal PGN files.

Powered by chess engine evaluations, the app identifies your blunders and mistakes, offering you the unique opportunity to replay these critical moments as personalized puzzles.

With the app, you will turn your mistakes into valuable learning opportunities!
Updated on
Jan 2, 2026
Available on
Android, Windows

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit

Ratings and reviews

4.7
51 reviews
Mark Bateman
May 4, 2024
Is nice idea. I also import games from the old legends and see if I can come up with an alternative. Many middle games can have a 1 pawn blunder and still be winnable. Bad is no way to save or export. Must be careful when naming an import. I change each game date to the same thing so that many imports go into same training. Too bad I can't group by player name or event.
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Mercutio1243
December 31, 2024
Mark, thank you for the review! As for your comments, please be so kind as to check the settings: in the segmentation mode setting, you can change how training sets are built. Also, you can export a game or position by using the information icon at the top of the "improve" screen Hope this helps, please consider to update your rating to 5 stars :)
Tekken7 Official
August 6, 2025
Fantastic App, no ads. one suggestion If you can fix the loading time because each game takes too much time in analysis. it would be better has an option to analysis the games separately after loading. Anyway Great App. kudos to you!
1 person found this review helpful
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Mercutio1243
September 6, 2025
Thank you, Tekken, I will think about that! Edit: Hi Tekken, I have improved the analysis time in the new version 2.0.0, have a look!
Michael Parton
November 22, 2025
Easy to import your own games, and look at your own mistakes. Way more fun than doing puzzles
1 person found this review helpful
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Mercutio1243
November 23, 2025
Thank you for the kind review, Michael!

What’s new

- Introduction of sensitivity threshold settings and import time settings per time control mode
- Various bug fixes and improvements