A simplified version of Countdown UK game-show.
About this app
There are three screens: * The menu screen, where you can choose language (with it's own statistical letter distribution) and timeout. * The numbers screen, where you can choose six numbers pushing units or decades and the goal is to get the closest possible to the target number using arithmetic operations. * The letters screen, where you can choose nine letters pushing vowel or consonant and the goal is to find the largest existing word using these letters.
The game doesn't resolve any of the puzzles, it's just a random generator of numbers and letters.
Licensed under GPL-3.0-or-later.
What's New in v1.3.1
Imported from the F-Droid repository index.
- # Changelog
- ## v1.3.1
- * Made font size device dependent.
- * Add scroll for small devices.
- * Change game screens internal structure.
- * Can set time in 30 seconds interval.
Version history
Feb 1, 2025 · 5.9 MB · Android API 24–35 · code 10301
Imported from the F-Droid repository index.
- # Changelog
- ## v1.3.1
- * Made font size device dependent.
- * Add scroll for small devices.
- * Change game screens internal structure.
- * Can set time in 30 seconds interval.
SHA-256 6973a06c13dbb74512c35964a3cb6996c9900f145cb8736513db2a19dc62792e
Dec 21, 2024 · 4.5 MB · Android API 24–35 · code 10202
Imported from the F-Droid repository index.
SHA-256 a8bc91ae4ff389607247d4d92a29ee80cafa510b10016d6cd39005c960845e10
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.gnu.itsmoroto.cifrasoletras 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, 1.2.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Cifras o letras 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 Cifras o letras, and a listing is removed when the evidence for it stops holding up.
Get Cifras o letras
Every source we list for org.gnu.itsmoroto.cifrasoletras 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
6973a06c13dbb74512c35964a3cb6996c9900f145cb8736513db2a19dc62792e
Signing certificate
97410a0fdc40cbf141faa162d207adb54d22678b3d082aaa801f31f65db29292
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.
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