The crazy calculator (RPN mode). Once you get used to it, you will love it :-)
About this app
Dib2Calc (aka Dibdib Calculator)
The crazy calculator. A short introduction is provided when you start it for the first time.
The goal is to provide many specific functions, especially for text data and data structures, not only for calculating numbers. This is one of the reasons why it makes use of the so-called RPN notation: instead of typing 4 '+' 3 '=', you type 4, 3, '+' (but you can also type 4 5 6, 3, '+' resulting in 7 8 9, because 7=4+3, 8=5+3, 9=6+3 ...)
Just try it out. Once you get used to it, you will love it :-)
Your data is protected (encrypted) if you use your own access code and password. In case you have a lot of data, make sure to save it to the device's Download area via the SAVTO function (as a backup).
See https://gitlab.com/dibdib/dib2calc for more information (and https://gitlab.com/dibdib/dib2calc/-/blob/master/known_issues.md for known issues).
Licensed under GPL-3.0-or-later.
What's New in v0.24.30
Imported from the F-Droid repository index.
- - Version 0.24.30 (alpha software!, not thoroughly tested).
- - Calculation of leap seconds adjusted.
Version history
Dec 5, 2025 · 3.4 MB · Android API 21–29 · code 2430
Imported from the F-Droid repository index.
- - Version 0.24.30 (alpha software!, not thoroughly tested).
- - Calculation of leap seconds adjusted.
SHA-256 542cf159294afb871641838a25caae76cb026071eb310ac9456687d738992432
Mar 26, 2025 · 3.4 MB · Android API 21–29 · code 2428
Imported from the F-Droid repository index.
- - Version 0.24.28 (alpha software!, not thoroughly tested).
- - Calculation of leap seconds adjusted.
- - Makes use of extra storage permissions (e.g. for backups) - if granted.
- - Without such access to the 'Download' area, some functions get restricted.
SHA-256 d59ac4b364bca92cff60e4e094fb059556dc6375f629a12ab13e4426cefeb28b
Jul 17, 2024 · 3.4 MB · Android API 21–29 · code 2426
Imported from the F-Droid repository index.
- - Small improvements.
- - Does not insist on extra storage permissions.
- - Without such access to 'Download', some functions get restricted.
SHA-256 c05c903da2c9e7c12a489c9dedbb382782a50dfd6001074c0f735ae8bbd8219b
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
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.gitlab.dibdib.dib2calc 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, 0.24.28 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Dib2Calc 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 Dib2Calc, and a listing is removed when the evidence for it stops holding up.
Get Dib2Calc
Every source we list for com.gitlab.dibdib.dib2calc 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
542cf159294afb871641838a25caae76cb026071eb310ac9456687d738992432
Signing certificate
af5edfa9d516ebe6e6528176eabfc45aa779667cdce04112b9791588b0489765
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
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.