OONI Probe App Empowers Global Internet Censorship Data Collection

Measure internet censorship

Contribute to the world's largest open dataset on internet censorship

Download OONI Probe

Mobile

Android & iOS

Get OONI Probe on Google Play Get OONI Probe on the App Store Get OONI Probe on F-Droid

Mobile user guide →

Desktop

Windows & macOS

Download for Windows Download for macOS

Desktop user guide →

Command line

Linux & macOS

Installation instructions → CLI user guide →

What OONI Probe measures

Discover which websites are blocked

Run OONI Probe to check which websites are blocked in your country.

Learn how fast your network is

Measure the speed and performance of your network with the NDT test, developed in collaboration with M-Lab.

Check which apps are blocked

Test WhatsApp, Facebook Messenger, and Telegram to check if they are blocked. Run OONI Probe to check if circumvention tools work on your network.

Share evidence of internet censorship with the world

As soon as you run OONI Probe, your test results will automatically get published in near real-time. By running OONI Probe, you help increase transparency of internet censorship.

Explore OONI measurements from around the world >>