Chessis: Chess Analysis

Contains adsIn-app purchases
4.8
24.7K reviews
1M+
Downloads
Content rating
USK: All ages
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About this game

ChessIs is a Chess Analysis app that allows you to
✔️ Analyze your games and get game reports
✔️ Analyze chess positions with Stockfish Engine
✔️ Detect Blunders, Mistakes, Missed Wins, Best Moves, etc
✔️ Play chess against Computer according to your level.
✔️ Setup Board Positions (Board Editor) and analyze them
✔️ Open Pgn files (PGN Viewer)
✔️ Get blunder alerts and learn why it was a blunder
✔️ Add multiple engine lines
✔️ Play engine lines
✔️ Customize board color and pieces
✔️Analyze your chess games from chess.com or Lichess
✔️ Export Annotated Pgn
✔️ Adjust "Game Report Depth"
✔️ Chess960 (FreeStyle Chess)
✔️ Games database with the ability to search fen in games
✔️ Add Oex engines
✔️ Change Engines settings like hash value and threads
✔️ List of all chess openings to explore
✔️ Play chess on the clock or set engine think time
✔️ Avg CPL on game reports
✔️Analyze games on either time or depth
✔️Show Threats
✔️Accuracy %
✔️ Threats
✔️ Draw Arrows on the board

ChessIs is one of the best Chess Analyzer apps. It helps you to improve your chess by analyzing your games and providing you with game reports which contain Blunders, Missed Wins, Best Moves, etc. It not only tells you where you made a blunder but also tells why that was a blunder.

To support the app we offer a Pro version with some extra benefits.
Most features of the app are free but you get some extra benefits with the Pro version:
✔️ Play/Show "Why Blunder" Line
✔️ Play Engine Lines
✔️ Enable NNUE
✔️Add unlimited engine lines
✔️ Adjust "Game Report Depth"
✔️ Adjust "Game Report Time"
✔️ Deep Analysis
✔️ While Playing show each move's strength
✔️ While Playing get a mistakes alert as well
✔️ No Ads
✔️ Analyze unlimited games forever!
✔️ Key Elements
Note: Deep analysis provides much more accurate and consistent results compare to quick analysis.

So Let's Analyze Chess with the ChessIs app!!!

You can expect lots of improvements and new features in the future! If you have any suggestions or need help, please feel free to email me at chessimprovementapps@gmail.com, Thank you:)
Updated on
11 Nov 2025
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
App activity, App info and performance and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.7
22.9K reviews
Fred Smith
14 April 2025
Best free chess game ever. Gives you an analysis after each game. You can step through each move of the finished game and it shows where you should have moved and indicates if each move is a book move, or the best, good, inaccurate, mistake, or a blunder. it also has example openings you can study. Also, no ads.
115 people found this review helpful
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Chess Improvement Apps
14 April 2025
Thank you, Fred for your kind words:)
moslem safari
17 July 2025
Chessis is a solid app for chess players of all levels. The puzzles are helpful, the analysis tools are great, and the interface is clean. I really like how it breaks down my mistakes and shows better moves. However, some advanced features are locked behind a paywall, and the free version can feel limited after a while. Still, a great app for improving your game!
25 people found this review helpful
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Isaiah Leeds
12 November 2025
Very useful. Dinged one star, because it would be nicer if we could import PGNs, and if the team added each new engine version via app updates for pro users when they come out. Rather than needing is to download it. More convenient, and doesn't require as much CPU power to run an outside engine. Running SF17 heats up my phone significantly in this way. Thanks for the app, folks!
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What's new

Background analysis + Games Archive improvements
- See which games are being analyzed and which are queued.
- Tap "Do in background" on the main Analysis screen to send the current game to background analysis and keep using other screens.
Fixes
- Resolved a bug with Retry Mistakes (Pro).
Thanks for reporting bugs and suggesting improvements! 🙏