OpenStud for InfoStud is an open-source (GPL-3.0-only) Android app by Leonardo Sarra. The APK we host is 8.7 MB, it needs Android 6.0 or newer, and it declares 4 permissions.
The file on this page is OpenStud for InfoStud 1.29.2, 8.68 MB, and it installs on Android 6.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time com.lithium.leona.openstud 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 GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
F-Droid, who build and sign this package, flag it: it relies on a network service that is not open source. We pass that on as they recorded it — we have not tested the app ourselves.
The most recent release upstream is from Aug 10, 2021, 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
- 1.29.2
- Size
- 8.68 MB
- Requires Android
- API 23
- Package
- com.lithium.leona.openstud
- 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: 3452ab710fe85829719707d04697fdd0c07c8f60dffa7caca497b9e7ada75008
Signing certificate (SHA-256): b3ef98c4e7360129b4864bca002b221571666edb67f5903066677b4d9377e7ac
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
- ACCESS_NETWORK_STATE
- INTERNET
- USE_BIOMETRIC
- USE_FINGERPRINT
Screenshots


