Chess tactic trainer based on https://database.lichess.org/#puzzles.
About this app
Tactic Trainer
Tactic Trainer is an advanced chess training application designed to help players of all levels improve their tactical skills. With a comprehensive set of features, Tactic Trainer offers an engaging and effective way to practice and master chess tactics.
Key Features:
• Interactive Chessboard: The app features an interactive chessboard that allows users to solve puzzles and practice moves directly on the board.
• Extensive Puzzle Library: Access a vast library (100k puzzles) of chess puzzles ranging from 1600 to 3000 levels. Each puzzle is designed to challenge and improve your tactical thinking.
• Puzzle Categories: Puzzles are categorized by themes such as openings, middlegame tactics, and endgames.
• Detailed Puzzle Information: Each puzzle comes with detailed information, including the position, moves, rating, and tags, providing context and helping users understand the tactical themes.
• Performance Tracking: Track your progress with detailed statistics and performance metrics. See how you improve over time and identify areas that need more practice.
• User-Friendly Interface: The app features a clean and intuitive interface, making it easy to navigate and use for players of all ages.
• Offline Access: Puzzles can be practiced offline, ensuring you can train your tactics anytime, anywhere.
• Regular Updates: The app is regularly updated with new puzzles and features, ensuring a fresh and engaging experience.
Whether you are a beginner looking to learn the basics or an advanced player aiming to sharpen your skills, Tactic Trainer provides the tools and resources you need to become a better chess player. Download Tactic Trainer today and start your journey to mastering chess tactics!
Licensed under GPL-3.0-only, by Tibor Tarnai.
What's New in v1.0.36
Imported from the F-Droid repository index.
Version history
Jul 12, 2026 · 17.2 MB · Android API 24–37 · code 36
Imported from the F-Droid repository index.
SHA-256 f3340d74267b8399ff44985865631ce2b14011ace8c209eca0cf49fac78f68e1
Jul 10, 2026 · 17.2 MB · Android API 24–37 · code 35
Imported from the F-Droid repository index.
SHA-256 68ac7547a4eff4a3361fcd62908d719b4255203012ddd7bd5a71a791700e0cfe
May 24, 2026 · 17.2 MB · Android API 24–37 · code 32
Imported from the F-Droid repository index.
SHA-256 dc9c878f236e8135603e89177086e1c0c781f178ebf24ce243dfd6b579f37fa5
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.tacticmaster is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.0.35 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall TacticMaster first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of TacticMaster, and a listing is removed when the evidence for it stops holding up.
Get TacticMaster
Every source we list for com.tacticmaster is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
f3340d74267b8399ff44985865631ce2b14011ace8c209eca0cf49fac78f68e1
Signing certificate
7dfe7396002974a2d4d7ec50fba97366e3872d52e4b2a7c9872a979d773b6257
Permissions Required
What each permission lets TacticMaster do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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