RPNcalc is an open-source (GPL-3.0-only) Android app by Alexei Pesic. The APK we host is 19 MB, it needs Android 5.1 or newer, and it declares no permissions at all.
The file on this page is RPNcalc 1.3.1, 19.06 MB, and it installs on Android 5.1 and newer.
We compared the signing certificate of this build with the certificate recorded the first time dev.pesic.rpncalc entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest inside the APK declares no permissions at all.
Its licence is GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
The most recent release upstream is from Jun 16, 2023, over 3 years ago. It still installs; it is simply not being updated.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 1.3.1
- Size
- 19.06 MB
- Requires Android
- API 22
- Package
- dev.pesic.rpncalc
- Signature checked on
- Sep 22, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: 6e43eb1154989b464ab00bc5faf767ef055e872030f4ec08e7a65b9a3aff9e1e
Signing certificate (SHA-256): 339349403e30e34870e00d9f989575d7766f6264ce97663d2514703622102d18
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Screenshots
