Chessis MOD APK Download (Premium Unlocked) for Android

Chessis MOD APK is the search term chess players use when looking for a modified Android build of Chessis: Chess Analysis, the Stockfish-powered analysis app from Chess Improvement Apps. The official app turns every finished game into a lesson: it imports games from Chess.com or Lichess, runs the Stockfish engine over each move, and produces a full game report with accuracy, blunders, missed wins, and best moves. Chessis MOD APK promises the same analysis with the paid Pro tools open from the first session, including deep analysis, unlimited engine lines, NNUE evaluations, and no ads. This guide covers what Chessis MOD APK actually offers, what the October 2026 check found about a real modified build, and how the app compares with rival chess tools, so the download decision rests on facts rather than on a title claim.

The October 2026 check for this guide found real MOD listings for this exact app. MODYOLO lists Chessis: Chess Analysis v21.5 MOD APK as Unlocked All Content, with paid features unlocked. A HappyMod mirror lists the same v21.5 build as Premium Unlocked with ads removed. A third catalogue, apkmb, lists Chessis v21.6 MOD APK as Premium Unlocked, and the file hosted on this page comes from that listing. The downloaded Chessis MOD APK file was checked before hosting: the package name is com.chessimprovement.chessis, the version is 21.6, the file passes a zip integrity test, and the size is 53,211,465 bytes (50.75 MB). The larger size, compared with the 6.52 MB Play Store APK, comes from bundled native libraries in the build, including OpenCV and Tesseract for board scanning, TensorFlow Lite for the chess model, and the Leela Chess Zero engine library. No claim is made here about how the modification behaves inside a live game, because the check covered file identity and integrity only, which is the correct scope for a download guide.

This Chessis MOD APK guide also corrects the old page. The previous version shown in the App Details section was 9.1, years behind the current releases, and the old download entry pointed at a file1.apkpoor.com address that no longer serves a current build. The old text also carried typos, including a line about improving “chest scales” and a reference to a “computer brand” where the Stockfish engine was meant. The thin old page, around 600 words with no comparison, no App Info table, and no structure, has been replaced with a full guide. The download entry on this page now points to the verified v21.6 MOD file hosted on Gofile, and the version, size, and package details in the App Info table match that file.

What Is Chessis MOD APK?

The app behind Chessis MOD APK is a serious study tool rather than a game. The app launched on Google Play in July 2021 and has passed 1 million installs, with an estimated 2.2 million installs and a 4.7 star rating from around 29,500 reviews as of October 2026. The free version already covers the core workflow: analyse a game, read the report, and study the mistakes. Chessis Pro, the paid layer that Chessis MOD APK unlocks, exists for players who want deeper analysis, more engine lines, and unlimited game analysis without ads. Chessis MOD APK targets players who want that Pro layer without paying for it, and the listings found in October 2026 describe exactly that unlock. The rest of this guide explains the analysis tools in detail, compares Chessis MOD APK with Chessify, the Chess.com app, and Chessigma, and sets out the install steps and the honest limits of a modified build.

Chessis MOD APK App Info

The version gap between the hosted Chessis MOD APK build and the Play Store listing deserves a plain explanation. Google Play lists Chessis at version 21.5, updated 12 September 2026. MODYOLO and the HappyMod mirror both list the same 21.5 build. The apkmb listing, and the file obtained from it, carry version 21.6. The version was read from the APK manifest itself, so 21.6 is the version of the file hosted here, not a rounded or guessed number. The Play Store listing may simply lag behind the newest build, or the catalogue may carry a build that reached distribution before the store page updated. Either way, the App Info table states both numbers, and the download entry names the exact file.

Chessis MOD APK Features

Chessis MOD APK keeps the full analysis toolkit of the official app and opens the Pro layer on top of it. The features below are the ones listed on the Play Store page, on APKPure, and on the MOD catalogues, and each one is described as the app itself presents it. Nothing here describes a feature that only exists in a catalogue headline.

Stockfish Engine Analysis

Chessis MOD APK analyses positions and full games with the Stockfish engine, the strongest open-source chess engine in the world. The current Play Store listing names Stockfish 19, while older catalogue text names Stockfish 18, which reflects how quickly the app tracks engine releases. Every move in an imported game receives a label, from best move and excellent through inaccuracy, mistake, and blunder, and the evaluation bar shows which side stands better at each point. The engine inside Chessis MOD APK also explains why a move failed, not merely that it failed, which is the difference between a report and a lesson. Multiple engine lines can be added, so a position can be studied through several candidate moves at once, and engine settings such as hash size and thread count can be adjusted for deeper calculation on stronger devices.

Full Game Reports

The game report is the heart of Chessis MOD APK. After analysis, Chessis MOD APK shows move accuracy as a percentage, an estimated rating for the game, and a phase-by-phase breakdown of opening, middlegame, and endgame. The report lists blunders, missed wins, and best moves, and it records average centipawn loss, a standard measure of how much accuracy each move gave away. Time spent per move is also tracked, which helps identify rushed decisions and slow thinking in equal measure. Game report depth and time can be adjusted in the Pro tools, and deep analysis gives more accurate and more consistent results than the quick analysis used for a first pass. The report can be exported as an annotated PGN, which keeps the engine comments attached to the moves for later study on a computer.

Chess.com and Lichess Import, Plus PGN Files

Chessis MOD APK loads games directly from Chess.com and Lichess accounts, and it can also browse Lichess games from inside the app. For games played anywhere else, the app opens PGN files, works as a PGN viewer and editor, and exports annotated PGN files for sharing or archiving. A games database with FEN search lets a position be found by its Forsyth-Edwards Notation code, which is useful for opening preparation and for checking how a specific position has been handled before. The PGN workflow matters because most serious players already keep game collections, and Chessis MOD APK is built to sit on top of those collections rather than replace them.

Board Scanner and Board Editor

The Chess Image Scanner in Chessis MOD APK points the camera at a two-dimensional chessboard image and loads the position for analysis without manual setup. The scanner uses on-device image processing, which is one reason the MOD file is larger than the Play Store APK: the build carries OpenCV and Tesseract libraries for that recognition work. For positions that need building by hand, the board editor sets up any arrangement of pieces and runs the engine over it. Arrows can be drawn on the board to mark candidate moves and patterns during study, and the board colours and piece sets can be changed to suit the player. Chess960, also called Fischer Random Chess, is supported, with randomised starting positions for a different kind of practice.

Play Against the Engine and Engine Versus Engine

Chessis MOD APK lets a player compete against computer opponents at different difficulty levels, which turns the analysis engine into a training partner. The Play and Learn mode analyses moves in real time and gives feedback during the game, so mistakes are caught while the position is still on the board. Engine versus Engine mode watches two engines play each other, which is a practical way to study high-level play and to test an opening line without playing it personally. The app also includes guessing games and puzzles for tactical training, and an opening study section for learning standard lines. Additional UCI engines can be added through OEX engine files, which extends the app beyond the built-in Stockfish.

Chessis MOD APK Pro Tools, Unlocked in the MOD

The Pro upgrade in the official app adds a defined set of tools, and the Chessis MOD APK listings describe those same tools as unlocked. Pro opens deep analysis, unlimited engine lines, NNUE neural network evaluations, adjustable game report depth and time, and the ability to play and show the “why blunder” line and to play engine lines directly. While playing, Pro shows the strength of each move and raises a mistake alert as soon as an error happens. Pro also removes ads and allows unlimited game analysis forever. The free version limits how many games can be analysed and shows ads, so the MOD build changes the daily experience most for players who analyse several games a week. The app is available in 13 languages, and app shortcuts from a long press on the icon give quick access to common actions.

Chessis MOD APK vs Chessify, Chess.com, and Chessigma

Chessis MOD APK is one of several Stockfish-based tools on Android, and the choice between them depends on what a player needs most: deep game reports, board scanning, lessons, or a free and open tool. The table below compares Chessis MOD APK with three real alternatives using figures published on Google Play, AppBrain, and the apps’ own listings in October 2026.

The comparison shows where Chessis MOD APK stands strongest. Chessify has a similar install base and a board scanner, but its 3.2 star rating and cloud-only engine make it a weaker choice for offline study. The Chess.com app is the biggest platform by far, with lessons, puzzles, and online play, yet its best analysis tools sit behind a Premium subscription, and its premium access is server-side, which modified builds cannot reliably unlock. Chessigma is the newest rival, launched in July 2026, with the highest rating of the group at 4.89 stars, but it has only about 25,000 installs and a narrower feature set. Chessis MOD APK sits in the middle: a mature app with over 1 million installs, a 4.7 star rating, on-device analysis, and the Pro tools open. Players who want lessons and online play should keep the Chess.com app alongside it, and players who want a second opinion on a game report can cross-check with Chessigma, which is free and ad-free.

For readers who also follow strategy games on this site, the Warspear Online guide covers another deep strategy title with a long progression system, and the Imperial Destiny: Path of Gold guide covers a simulation game where planning matters as much as speed. The Blip guide covers a location-based app for a different kind of daily use.

Chessis MOD APK Pros and Cons

How to Download and Install Chessis MOD APK

Chessis MOD APK installs like any other Android package from outside the Play Store, with one extra step because the build is re-signed. The steps below use the Chessis MOD APK file hosted on this page, version 21.6, package com.chessimprovement.chessis, size 53,211,465 bytes. The download on this page is hosted by APKPoor on Gofile, and the file details match the App Info table above.

1. Download the Chessis MOD APK file from the download button on this page and wait for the 50.75 MB file to finish completely. A partial download will fail the install, so check the file size in the file manager before continuing. 2. Open Android Settings, go to Security or Apps, and allow installs from unknown sources for the browser or file manager used for the download. Android 8 and later ask for this permission per app, so the prompt appears when the APK file is opened. 3. If the official Chessis app from Google Play is installed, uninstall it first. The MOD build carries a different signature, and Android refuses to install a re-signed package over the original. Game data and PGN files should be backed up before uninstalling. 4. Open the downloaded APK file, tap Install, and wait for the install to complete. 5. Open Chessis MOD APK, grant the storage permission if asked, and import a game from Chess.com or Lichess, or open a PGN file, to confirm that analysis works. 6. For the first study session, run a quick analysis on a recent game, read the report, and then try deep analysis on one loss to see the difference in accuracy.

If the install fails, the usual causes are a partial download, an existing official install with a conflicting signature, or an Android version below 5.0. Re-download the file, confirm the size is 53,211,465 bytes, remove the official app, and try again. If the app asks for an update from Google Play after install, decline it, because a Play update would replace the modified build with the standard free version and restore the Pro limits and ads.

Chessis MOD APK FAQs

Chessis MOD APK Verdict

Chessis MOD APK earns a clear recommendation for players who study their games seriously. The official app is already one of the best analysis tools on Android, with a 4.7 star rating, over 1 million installs, and a Stockfish engine that runs on the device. The MOD build adds the part that matters most for regular study: unlimited game analysis, deep analysis, unlimited engine lines, NNUE evaluations, and no ads. The file hosted on this page is a real build for the real app, version 21.6, package com.chessimprovement.chessis, verified before hosting, with three catalogues listing the same unlock. The 50.75 MB size and the re-signed install are the only real costs, and both are manageable with the steps in the install guide.

Players who only analyse a game or two a week can stay with the free official version and lose little. Players who analyse several games a week, prepare openings, or study tournament losses should take the MOD build, because the Pro tools change how much can be learned from each game. Chessis MOD APK is not a game and not a shortcut to a higher rating on its own; the rating improves only when the reports are actually studied. For that study, Chessis MOD APK is the strongest free option in this guide, ahead of Chessify on rating and offline use, ahead of the Chess.com app on open analysis tools, and ahead of Chessigma on maturity and feature depth. Download the verified v21.6 file from this page, install it with the official app removed first, and start with a deep analysis of the most recent loss.