Sudoku app for Android
About this app
Libre-Sudoku is a Sudoku app for Android, built with Jetpack Compose and Material3.
Features:
• Basic things such as pencil marks (notes), undo, game pause, board reset and give up (show solution) • 9x9, 6x6 and 12x12 with 4 difficulties • Zoom and pan the board in 12x12 • 2 input methods. Digit first and cell first • 2 types of mistakes checking. First is detecting game rules violations and the second is checking with final solution • Statistics and records. Best and average times, win streak, started/completed games count and win rate • Saves. You can continue any uncompleted game whenever you want • Many settings and customizations such as auto erase notes, remaining uses, identical numbers highlight, app themes and more • Tutorials for game techniques (in progress) • Custom sudoku (manually or from string). Supported game types: 9x9, 6x6, 12x12
Licensed under GPL-3.0-only, by kaajjo.
What's New in v2.0.2
Imported from the F-Droid repository index.
Version history
Mar 8, 2025 · 3.9 MB · Android API 26–35 · code 22
Imported from the F-Droid repository index.
SHA-256 1e93d2be2e234cdb2e38c79c539542a72cbe0330a0d1da1eeb0c8ce544e12d57
May 2, 2023 · 2.7 MB · Android API 26–33 · code 7
Imported from the F-Droid repository index.
- Change date formats
- Option to remember the previously selected difficulty and game type
- Improved game completion screen
- New languages
- Other fixes and improvements
- Full changelog available on GitHub
SHA-256 526f965491d1e80061aa42b327bb85e7c30b9c697c1cf3ed47f82a5ffd06bb1e
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- 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.kaajjo.libresudoku 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, 1.5.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall LibreSudoku 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 LibreSudoku, and a listing is removed when the evidence for it stops holding up.
Get LibreSudoku
Every source we list for com.kaajjo.libresudoku 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
1e93d2be2e234cdb2e38c79c539542a72cbe0330a0d1da1eeb0c8ce544e12d57
Signing certificate
4e040a7f5f27dd49eb971c921e5aadc457d1573bacd1d682185c752dcd31424e
Permissions Required
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.
Report a problem with this listing
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