Chessis: Chess Analysis v20.9 MOD APK (Unlocked All Content)
Updated on September 9, 2026App Info
| App Name | Chessis: Chess Analysis |
|---|---|
| Publisher | Chess Improvement Apps |
| Genre | Board |
| Size | 10M |
| Version | 20.9 |
| MOD Info | Unlocked All Content |
| Get it On |
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| Requires | android Android 5.1 |
Chessis: Chess Analysis MOD APK provides players with a robust toolset for deep tactical review and skill development. This modified version focuses on providing full access to the application’s premium analytical tools, allowing users to leverage the power of the Stockfish engine without the restrictions found in the standard release.
What This MOD Changes
This modification provides several structural and functional alterations to the application to enhance usability and accessibility:
- Paid Features Unlocked: All premium content and advanced features that normally require a purchase are fully accessible.
- AOSP Compatible: The application has been modified to function on devices without Google Play Services, ensuring compatibility with Open Source Android projects.
- Universal CPU Architecture: The file is built to work across various CPU types rather than being limited to specific hardware.
- Full Multi-Language Support: All available language packs are included in the package.
- Optimization: All debug information has been stripped from the code to ensure a leaner installation.
- Re-Signed: The original digital signature has been changed to facilitate the implementation of the modified features.
Version and Compatibility
The Chessis: Chess Analysis MOD APK is based on the following file technical specifications:
- Package Name: com.chessimprovement.chessis
- Version inside the APK: 12.2 (build 122)
- File Size: 8 MB
- Minimum Android Version: 5.0 (API 21)
- Package Type: Single APK (no additional OBB data required)
Because the digital signature of this file has been modified, it is not possible to install this over a version downloaded from the Google Play Store. The existing official version must be removed before this modified version can be installed.
How to Install
To install the Chessis: Chess Analysis MOD APK, follow these specific steps to ensure the file is handled correctly by your device:
- If you have the official version of Chessis installed from the Play Store, you must uninstall it first to avoid signature conflict errors.
- Go to your device Settings and navigate to Security or Applications.
- Locate the option to Allow Installation from Unknown Sources and enable it.
- Open your file manager and locate the downloaded Chessis-Chess-Analysis-v20.9-MOD-thinkkers.com.apk file.
- Tap the file to initiate the Android installer.
- Once the process is complete, you can launch the app and access the unlocked content immediately.
How This Compares to the Original Release
This version is based on version 12.2 of the application. Unlike the official release, which may gate specific Stockfish analysis tools or advanced blunder explanations behind a paywall, this version unlocks those features by default. Furthermore, while the standard version often relies on Google Play Services for licensing and analytics, this version is AOSP-compatible and has had all debug info removed, making it slightly more streamlined for devices that prioritize privacy or run custom firmware.
About Chessis: Chess Analysis
Chessis is an app designed to help serious chess players improve technically. Stockfish, one of the most powerful chess engines, forms the backbone of Chessis. While Stockfish is a grandmaster-level chess coach, it is normally found only on computers. Chessis brings Stockfish to a mobile interface, allowing players to carry grandmaster-level analysis in their pockets.
For most players, analysis is the central part of the app. This function lets you analyze your own games, which you can do by importing a file in PGN format, which is a standard chess move recording format. Stockfish analyzes ply by ply of a game to identify where the flow of the game shifted. From this analysis, a report is generated to a user with comments for each move. The report classifies all moves into inaccuracies, mistakes, and blunders (a blunder is a move that substantially changes the evaluation of the position in your opponent’s favor), and missed wins (a failure to make a tactic discovered by the engine).
An interesting feature of the application is blunder alerts and explanations. Being able to detect a bad move is one thing, but knowing why is a different skill. The application explains the logic behind the mistake, and describes how the opponent can profit from the mistake. The player is able to learn from this and be able to avoid making the same mistake in future games. By incorporating the explanation logic, rather than citing numbers, the application tries to incorporate tool that helps to close the human and machine strategies gap.
Besides the retrospective analysis of the games that have been completed, the application offers a position setup and evaluation tool. This tool is great for the game position connoisseurs, since players can analyze difficult opening traps, tricky middlegame positions, and intricate endgame positions. The player can also change the setup and see how the engine evaluates the position. This tool can help players figure out complex endgame positions and understand the difference between winning positions and draws.
Along with the analytical tools, the application provides a practice mode with its built-in computer opponent. Sparring against Stockfish or any other engine is an excellent but demanding method for improvement. There are no distractions for the engine like losing focus or having poor timing. It is always ready to punish every careless error you make. To maintain the precision needed to win this match of wits, you must continually concentrate. Actively practicing against the computer and then thoroughly examining each game reveals your bad habits to yourself. If your big failing is losing advantages in Rook endgames, then the application’s report system will show you how often this happens.
This application builds on the chess practice of all serious chess players from beginner to Master. It makes a sophisticated engine analysis practice environment available and easy to use with your phone. From unraveling parts of a Grandmaster game to understanding how you lost your blitz match, the application has the answers you need to identify the next step to improve your game of chess.







