Chessis: Chess Analysis

Chess Improvement Apps

Contains adsIn-app purchases

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 [e-mail]. Thank you!

Ratings and reviews

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.

This is an amazing app, I use it without getting the full version, and it has every feature needed. You can play against a friend on the same device two different ways and you can play a bot. I love the extra touch where you can make two versions of Stockfish play each other and set up the board randomly. It also is excellent at analyzing moves and helping you evolve the game. In all, great app.

Since the May 2026 update, the graphics have been improved a lot but the entire analysis is useless. This is because the quick analysis now needlessly takes about 4 times longer but is limited to the same 14 depth, yet gives crazy high wrong values. Before, we could let analysis run as deep as we wanted by stepping slowly through the moves (total 3 mins), now have to pay and it has a depth limit of only 18. And it's likely just as inaccurate as the quick one, anyway. A good program is ruined.

What’s new

What's new since 18.2 👇

🎯 Accuracy Insights + estimated rating for each game
🤖 Human-like bots with Win/Draw/Loss records + Challenge the Next Bot
🪤 Trap Training mode
🌍 Arabic language support
📱 Bluetooth 2-player & Chessnut e-board
⚡ Faster, sharper analysis
🐛 Smoother Stockfish 18 downloads + many bug fixes & stability improvements

Thanks for playing! ♟️