A Sudoku-like logic game
About this app
Gauguin is a Sudoku-like game where you solve grids via calculation and logic.
You can use it to relax or to solve difficult grids to your opinion.
In classic mode, you solve a 9x9 grid by typing a value from 1 to 9 in each cell such as - Each row and column contains each digit exactly once. - Each cage meets its given mathematical problem. E.g. a group of cells labeled with '5+' must be filled such that the sum of all digits is 5.
Via game options, you may alter the game to solve other digits, smaller or greater grids, hiding the operators.
Slick and modern UI
- No switching of 'pencil mode' or such thing is needed: To set a value of a cell, just use short-tap to alter a possible value and long-tap for a known value. - 'Fast Finishing Mode' enables to fill cell with exactly one pencil mark rapidly. To be activated in the preferences. - Uses colors from the painting 'The Siesta' from Paul Gauguin (guess where the app's name comes from…)
Game options
- grid sizes: 3x3 to 11x11 with classic 9x9 - includes rectangular grids, e.g. 7x9 - operations (add, subtract, multiply, divide) - digits (1 to n, prime numbers, Fibonacci sequence etc.) - difficulty (covering a increasing number of game variants) - usage of single cells - show or hide operators
Things still to be done
- not all grid variants get calculated in a reasonable time - on-boarding is missing a tutorial - not all game variants have been supplied with difficulty ratings yet - calculation of next grid is not bullet proof in some rare circumstances
Licensed under GPL-3.0-only, by Meik Piepmeyer.
What's New in v0.51.0
Imported from the F-Droid repository index.
- — New feature: You can now choose the duodecimal numeral system, with base twelve (digits 0..9, A, B).
Version history
Jun 13, 2026 · 12.1 MB · Android API 24–36 · code 75
Imported from the F-Droid repository index.
- — New feature: You can now choose the duodecimal numeral system, with base twelve (digits 0..9, A, B).
SHA-256 5df8d5346383bc151225dafcb46360122a6fe19a47c0ac2ae4a66645f845b2d4
Mar 28, 2026 · 12.2 MB · Android API 24–36 · code 74
Imported from the F-Droid repository index.
- — Bug fix: Fixes a crash at start up if the current save game file got corrupted.
- — Bug fix: Initial pencil marks and filling single cases did not work if a game was restarted.
- — Optimizations of the preference screen.
SHA-256 366a238c2ee000ae514f1333ecef5dbc142ae1ada82e7cd0f31570b3051c83bc
Mar 1, 2026 · 12.2 MB · Android API 24–36 · code 73
Imported from the F-Droid repository index.
- — Fixes the feature "Nishio solution" to treat a solution as valid if it contains errors.
- — The preference dealing with broader cage frames longer changes the inner cage drawing.
SHA-256 a2bb821de42836403d6ea17a04da8dd9e5e3d87d57fb39438097a35ff8887820
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 org.piepmeyer.gauguin 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, 0.50.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Gauguin 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 Gauguin, and a listing is removed when the evidence for it stops holding up.
Get Gauguin
Every source we list for org.piepmeyer.gauguin 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
5df8d5346383bc151225dafcb46360122a6fe19a47c0ac2ae4a66645f845b2d4
Signing certificate
e3b52addda7ef701e1a42e0bc3b8b4443a5eb29cbf62a47492b9ee697438da62
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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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