DumberKit: Calculator is an open-source (GPL-3.0-only) Android app by lbockaj. The APK we host is 3.0 MB, it needs Android 8.0 or newer, and it declares 2 permissions.
The file on this page is DumberKit: Calculator 1.1.0, 3.04 MB, and it installs on Android 8.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time com.dumberkit.calculator 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 2 permissions, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is GPL-3.0-only. 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
- 1.1.0
- Size
- 3.04 MB
- Requires Android
- API 26
- Package
- com.dumberkit.calculator
- Signature checked on
- Oct 23, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: dfcc7cb5138e6cb16fd5b95391550eb0113ae02a4449560ba3285f4180f7f63f
Signing certificate (SHA-256): 4b809126ab6d8f4c4a04a0514944b20a9313ddc9a33b830f6a4207a991c8809b
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
- INTERNET
- org.fossify.WRITE_GLOBAL_SETTINGS
Screenshots
