OONI Probe

Open Observatory of Network Interference

Tools

OONI Probe is an open-source (BSD-2-Clause) Android app by Open Observatory of Network Interference. The APK we host is 67 MB, it needs Android 7.0 or newer, and it declares 9 permissions.

The file on this page is OONI Probe 6.3.0, 66.60 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 org.openobservatory.ooniprobe 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 9 permissions, none of which cover contacts, location, SMS, the camera or the microphone.

Its licence is BSD-2-Clause. 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 · 66.60 MB

Version: 6.3.0
Size: 66.60 MB
Requires Android: API 24
Package: org.openobservatory.ooniprobe
Signature checked on: Nov 3, 2026
Where this file came from: F-Droid
Licence: BSD-2-Clause
Source code: Source for this version

File SHA-256: d20e109ad7c7d1bde83d99ce922722aed4dc6764cba2dbaea5b8918059cbb2e5

Signing certificate (SHA-256): ceb39f9f7950a5fe84dc917ad3433d146355c861f7f3294ce82d55fb8cb0c0e6

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.