CO3

Tbvns

CO3 is an open-source (GPL-3.0-or-later) Android app by Tbvns. The APK we host is 48 MB, it needs Android 7.0 or newer, and it declares 15 permissions.

The file on this page is CO3 V0.1.0-RC1, 47.51 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 com.co3 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 15 permissions, none of which cover contacts, location, SMS, the camera or the microphone.

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.

F-Droid, who build and sign this package, flag it: it only works with one specific server, which is not open source. We pass that on as they recorded it — we have not tested the app ourselves.

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.

Download APK · 47.51 MB

Version: V0.1.0-RC1
Size: 47.51 MB
Requires Android: API 24
Package: com.co3
Signature checked on: Oct 10, 2026
Where this file came from: F-Droid
Licence: GPL-3.0-or-later
Source code: Source for this version

File SHA-256: d8b7d9d28dbc50a0ff0c82dee69b143825cb369740ece06f275bb215aa67626f

Signing certificate (SHA-256): 8a07bd8afea94d0c91f673510ddbd038736bd784d683dd9388b757bb743e6b1c

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.