Chessis: Chess Analysis

4.7
29.3K reviews
Content rating
Rated for 3+
1M+
Downloads
Content rating
Rated for 3+
In-Game Purchases
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About this game

Chessis is a powerful Chess Analysis app that helps you improve your game!

✨ Recent Updates:
📷 Chess Image Scanner — scan 2D chess board images for instant analysis
⚔️ Engine vs Engine — watch engines battle each other
🧠 Smart Analysis — deeper insights, enable in analysis settings
🐟 Stockfish 18 — the latest and strongest engine
♟️ App Shortcuts — long-press the app icon for quick access
🎯 Lichess Games — browse and analyze your Lichess games directly
📝 Annotated PGN Export — select and download annotated games
🌍 13 languages supported

✔️ Analyze your games and get detailed game reports
✔️ Analyze chess positions with Stockfish engine
✔️ Detect blunders, mistakes, missed wins, and best moves
✔️ Play chess against the computer at your level
✔️ Set up 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 colors and pieces
✔️ Analyze your chess games from Chess.com or Lichess
✔️ Export annotated PGN
✔️ Adjust game report depth
✔️ Chess960 (Fischer Random Chess)
✔️ Games database with FEN search
✔️ Add OEX engines
✔️ Change engine settings like hash value and threads
✔️ List of all chess openings to explore
✔️ Play chess on the clock or set engine think time
✔️ Average centipawn loss on game reports
✔️ Analyze games by time or depth
✔️ Show threats
✔️ Accuracy percentage
✔️ Draw arrows on the board

Chessis is one of the best chess analysis apps available. It helps you improve your chess by analyzing your games and providing detailed game reports with blunders, missed wins, best moves, and more. It not only shows you where you made a mistake but also explains why it was a mistake.

To support the app, we offer a Pro version with extra benefits. Most features are free, but Pro gives you:
✔️ Play/Show "Why Blunder" line
✔️ Play engine lines
✔️ Enable NNUE
✔️ Add unlimited engine lines
✔️ Adjust game report depth
✔️ Adjust game report time
✔️ Deep analysis
✔️ Show each move's strength while playing
✔️ Get mistake alerts while playing
✔️ No ads
✔️ Analyze unlimited games forever!
✔️ Key Elements

Note: Deep analysis provides much more accurate and consistent results compared to quick analysis.

Let's analyze chess with Chessis!

We're always working on improvements and new features. If you have any suggestions or need help, please email us at chessimprovementapps@gmail.com. Thank you!
Updated on
Jun 27, 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
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
27.1K reviews
Fred Smith
April 14, 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.
200 people found this review helpful
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Chess Improvement Apps
April 14, 2025
Thank you, Fred for your kind words:)
Hamy To Harimanana Ranirison
July 3, 2026
This app is amazing so far especially with the offline reviewing, with each move shown a strength. I suggest an update where you would be able to have your position constantly analyzed & displayed while playing the game or setting up a board, so as to be able to toy around with more freedom and possibilities. For example, it would be useful when playing against an AI when it makes illegal moves. It also works to test positions & theories of some sorts. Overall, I have no complaints. Keep it up!
19 people found this review helpful
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Josh Pearson
July 1, 2026
I love everything about this app except the controls. They are too sensitive and close to each other. Can't seem to get through a game without at least 1 move made by accidentally brushing the wrong button or space on the board itself. It can't be my phone because I have never had the problem with other chess apps. Countless draws due to these accidental moves in the endgame. To developers- the controls and the board are too sensitive.
3 people found this review helpful
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Chess Improvement Apps
June 13, 2026
Thanks for the feedback. Could you clarify what you mean by “too close to each other”? Are you referring to: The chessboard squares being too sensitive to touch, causing unintended moves, or The controls below the board (such as the navigation buttons and the More Options/three-dot menu) being positioned too close together or being too sensitive?

What’s new

🎉 What's New

🔃 Retry mistakes from games. (Even from multiple games from Games Archive)

♟️ 3D pieces — add your own! Settings → Board Themes → tap ⋮ next to Pieces, then pick a ZIP of 3D pieces (SVG/PNG).

🖼️ Custom backgrounds — Settings → Board Themes → tap ⋮ next to Background.

😀 New avatars.

♿ Screen reader support for blind & low-vision players.

✨ Small improvements & bug fixes from your reports.

More coming soon! Feedback: support@chessis.app