ArityCalc is an open-source (Apache-2.0) Android app by woheller69. The APK we host is 2.2 MB, it needs Android 5.0 or newer, and it declares 4 permissions.
The file on this page is ArityCalc 1.58, 2.20 MB, and it installs on Android 5.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time org.woheller69.arity 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 declares 4 permissions, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is Apache-2.0. We took this build from F-Droid, and the source for this exact version is linked below.
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
- 1.58
- Size
- 2.20 MB
- Requires Android
- API 21
- Package
- org.woheller69.arity
- Signature checked on
- Sep 18, 2026
- Where this file came from
- F-Droid
- Licence
- Apache-2.0
- Source code
- Source for this version
File SHA-256: 9ec6dd21e8984c14f59f4c15205d224283b152637a81088da8458f9b9aad2bd5
Signing certificate (SHA-256): 083b4d98c248d71d559416abcb2ce7b57dde5e866044419b6e79f53dcfabad68
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.
Declared permissions
- WRITE_EXTERNAL_STORAGE
- VIBRATE
- org.woheller69.arity.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- READ_EXTERNAL_STORAGE
Screenshots
