Content rating
Everyone
1+
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Content rating
Everyone
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About this game

Blunderzone turns your real chess mistakes into focused tactics training.

Most chess trainers give you random puzzles. Blunderzone starts with the games you actually play, finds critical moments, and turns them into practice you can repeat. The result is a training flow that matches your openings, time controls, habits, and recurring tactical weaknesses.

Key features:

- Train from your own imported chess games
- Review game-based tactics created from missed opportunities
- Solve quick 10-puzzle sessions for speed and pattern recognition
- Use spaced repetition to keep important positions fresh
- Track streaks, ratings, progress, and puzzle states
- Add OTB games and review the positions you enter
- Upgrade to Basic or Premium for expanded limits and deeper analysis

Blunderzone is for chess players who want practical improvement. Your past blunders become a personalized training plan, so every session is tied to positions you are likely to see again.

The app supports free training and optional monthly memberships. Subscriptions are managed by Google Play.
Updated on
Apr 26, 2026

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
Personal info, Financial info, and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

What’s new

Initial production release.