Powerful and versatile multi-purpose calculator
About this app
Qalculate! - the ultimate multi-purpose calculator - is now finally available on Android!
It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation). Features include a large library of customizable functions, unit calculations and conversion, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation or interval arithmetic.
Licensed under GPL-2.0-only, by Jost Herkenhoff.
What's New in v0.2.1
Imported from the F-Droid repository index.
Version history
Dec 24, 2025 · 15 MB · Android API 26–35 · code 54
Imported from the F-Droid repository index.
SHA-256 31366f4dd3e750e56f6667af195d1a9d8b16e11fff4b967df759082f65d9b1dd
Dec 24, 2025 · 14.2 MB · Android API 26–35 · code 53
Imported from the F-Droid repository index.
SHA-256 ca9f7f2322c2dac1c02ca8d2631649995c4a0a66a4eb37d5075c7c737dfc89ca
Dec 24, 2025 · 14.5 MB · Android API 26–35 · code 52
Imported from the F-Droid repository index.
SHA-256 c2961b0570ce487d149999a1bb2c3ab903e48506a9f9cb6edc3eff61f8a5bb49
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.jherkenhoff.qalculate 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, 0.2.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Qalculate! 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 Qalculate!, and a listing is removed when the evidence for it stops holding up.
Get Qalculate!
Every source we list for com.jherkenhoff.qalculate 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
31366f4dd3e750e56f6667af195d1a9d8b16e11fff4b967df759082f65d9b1dd
Signing certificate
356f9980e2c82d419f4a5327c6f2cdd150a3d170a2003c7d3e38ab1b75b2d331
Permissions Required
What each permission lets Qalculate! 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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