Riichi Mahjong Calculator is an open-source (MIT) Android app by ssttkkl. The APK we host is 31 MB, it needs Android 7.0 or newer, and it declares 4 permissions.
The file on this page is Riichi Mahjong Calculator 1.1.4, 30.59 MB, and it installs on Android 7.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time io.ssttkkl.mahjongutils.app 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 4 permissions, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is MIT. 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
- 1.1.4
- Size
- 30.59 MB
- Requires Android
- API 24
- Package
- io.ssttkkl.mahjongutils.app
- Signature checked on
- Oct 31, 2026
- Where this file came from
- F-Droid
- Licence
- MIT
- Source code
- Source for this version
File SHA-256: 8e6bbc8a78962028337075cd05ae98bbaeefee15607b9b120f842837e6a15270
Signing certificate (SHA-256): 5c39f22ed1192933884426cc8cd14f3302f0d481573c056a66f0a5bec11e7186
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
- READ_CLIPBOARD
- WRITE_CLIPBOARD
- INTERNET
- io.ssttkkl.mahjongutils.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Screenshots
