Lock is an open-source (Apache-2.0) Android app by Marco Seguri. The APK we host is 86 KB, it needs Android 4.0 or newer, and it declares no permissions at all.
The file on this page is Lock 1.4.1, 85.70 KB, and it installs on Android 4.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time name.seguri.android.lock 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 Apache-2.0. We took this build from F-Droid, and the source for this exact version is linked below.
The most recent release upstream is from Jan 18, 2022, over 4 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
- 1.4.1
- Size
- 85.70 KB
- Requires Android
- API 14
- Package
- name.seguri.android.lock
- Signature checked on
- Sep 21, 2026
- Where this file came from
- F-Droid
- Licence
- Apache-2.0
- Source code
- Source for this version
File SHA-256: 29cbe675d8dfa0f366a022cbd65740ac70938daec753d36e15faa00343f67a2c
Signing certificate (SHA-256): 1e022782afab28deabd4498c2e1d8f3bbe867b3de9f7442694e182e440bf893a
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.
