A simple, modern calculator that uses RPN (Reverse Polish Notation).
About this app
A simple, modern RPN calculator that uses RPN.
Reverse Polish Notation is a system where the operators are entered _after_ the operands.
For example, rather than 2 + 2, you would enter:
2 2 +
The main benefit is a faster, more accurate interface.
Licensed under GPL-3.0-only, by Alexei Pesic.
What's New in v1.3.1
Imported from the F-Droid repository index.
Version history
Jun 16, 2023 · 19.1 MB · Android API 22–33 · code 9
Imported from the F-Droid repository index.
SHA-256 6e43eb1154989b464ab00bc5faf767ef055e872030f4ec08e7a65b9a3aff9e1e
Mar 20, 2023 · 18.8 MB · Android API 22–33 · code 8
Imported from the F-Droid repository index.
SHA-256 e40d2d3ed306cce70bf15900bd9c86acfe78256cb50ac5107d3b7f0de7398bfa
Jun 16, 2021 · 17.5 MB · Android API 16–30 · code 7
Imported from the F-Droid repository index.
SHA-256 7d076ffc3a66783f58c7aafbd6a630611f9303ec740003ad12c521206f0cc0c8
Will it run on your device?
87%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
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 dev.pesic.rpncalc 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, 1.3.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall RPNcalc 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 RPNcalc, and a listing is removed when the evidence for it stops holding up.
Get RPNcalc
Every source we list for dev.pesic.rpncalc 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
6e43eb1154989b464ab00bc5faf767ef055e872030f4ec08e7a65b9a3aff9e1e
Signing certificate
339349403e30e34870e00d9f989575d7766f6264ce97663d2514703622102d18
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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