DataStopwatch is an open-source (GPL-3.0-or-later) Android app by seoulcodingcafe. The APK we host is 3.4 MB, it needs Android 4.1 or newer, and it declares no permissions at all.
The file on this page is DataStopwatch 1.0, 3.40 MB, and it installs on Android 4.1 and newer.
We compared the signing certificate of this build with the certificate recorded the first time io.github.datastopwatch 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-or-later. We took this build from F-Droid, and the source for this exact version is linked below.
The most recent release upstream is from Dec 27, 2020, over 5 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
- 1.0
- Size
- 3.40 MB
- Requires Android
- API 16
- Package
- io.github.datastopwatch
- Signature checked on
- Sep 22, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-or-later
- Source code
- Source for this version
File SHA-256: 37a00bf88373920fca6b53985fc4825fe9d6b25871645108e4dab49826c542d9
Signing certificate (SHA-256): 5f609a319fedd988009b6e8d69d5a0ab9e638e996a17beb3896ce91ffb10e71a
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
