OONI Probe6.2.1 - App Store

Are websites and social media apps blocked? Is your network unusually slow? Run OONI Probe to find out!

With this app, you will examine the blocking of websites and instant messaging apps, measure your network's speed and performance, and check whether systems that could be responsible for censorship and surveillance are in your network.

OONI Probe is developed by the Open Observatory of Network Interference (OONI), a free software project (under The Tor Project) that aims to uncover internet censorship around the world.

Since 2012, OONI’s global community has collected millions of network measurements from more than 200 countries, shedding light on multiple cases of network interference.

▶ Collect evidence of internet censorship
You can check whether and how websites and instant messaging apps are blocked. The network measurement data you will collect may serve as evidence of internet censorship.

▶ Detect systems responsible for censorship and surveillance
OONI Probe tests are also designed to uncover the presence of systems (middleboxes) that could be responsible for censorship and surveillance.

▶ Measure the speed and performance of your network
You can measure the speed and performance of your network by running OONI's implementation of the Network Diagnostic Test (NDT). You can also measure video streaming performance with the Dynamic Adaptive Streaming over HTTP (DASH) test.

▶ Open data
OONI publishes network measurement data because open data allows third parties to verify OONI findings, conduct independent studies, and answer other research questions. Openly publishing OONI data also helps increase transparency of internet censorship around the world. You can explore and download OONI data here: https://ooni.io/data/

▶ Free software
All OONI Probe tests (including our NDT and DASH implementations), are based on free and open source software. You can find OONI software projects on GitHub: https://github.com/ooni. Curious to learn how OONI Probe tests work? Learn more: https://ooni.io/nettest/

To receive updates from the OONI-verse, follow us on Twitter: https://twitter.com/OpenObservatory

Version History * Measurement engine (`org.ooni:oonimkall*`) v3.30.0
* `org.ooni:passport*` 0.1.7
* Add support for `resolver_type`.
* Bug fixes and improvements 6.2.1 Sep 24 * Measurement engine v3.30.0
* Enhanced offline handling and retry mechanisms
* Bug fixes and improvements 6.2.0 Aug 12 * Measurement engine is OONI Probe CLI v3.29.0
* Bug fixes and improvements 6.1.1 Jul 1 * Measurement engine is OONI Probe CLI v3.29.0
* Add support for anonymous credentials
* Bug fixes and improvements 6.1.0 Jun 23 * Measurement engine is OONI Probe CLI v3.29.0
* Cleaner UI for results with errors
* Updated translations (Japanese, Greek, Portuguese, German, Chinese)
* Bug fixes and improvements 6.0.2 May 26 * Measurement engine is OONI Probe CLI v3.29.0
* Fix auto-run issue preventing OONI tests from running 6.0.1 Mar 18 * Measurement engine updated to OONI Probe CLI v3.29.0
* New dashboard with statistics and news from OONI
* New tests screen with search
* View results aggregated by runs
* Geolocation IP database now auto-updates
* Various minor bug fixes and enhancements 6.0.0 Mar 4 * Measurement engine updated to OONI Probe CLI v3.28.0
* Usability improvements for OONI Run Links
* Various minor bug fixes and enhancements 5.3.0 12/01/2025 * Measurement engine updated to OONI Probe CLI v3.27.0
* Various minor bug fixes and enhancements 5.2.2 10/09/2025 * Measurement engine updated to OONI Probe CLI v3.26.0
* Filter results by date and network
* Mark multiple results as viewed
* Delete results selectively
* New contact screen, with the ability to include logs
* Improved translation of plurals
* Chosen websites for testing are kept from the previous run
* Various minor bug fixes and enhancements 5.1.0 07/08/2025 * Measurement engine synced with OONI Probe CLI v3.25.0.
* Fix running OONI Run link tests with large amounts of URLs.
* Other bug fixes and improvements. 5.0.6 04/17/2025 * Measurement engine synced with OONI Probe CLI v3.24.0.
* Bug fixes and improvements. 5.0.5 03/18/2025 * Measurement engine synced with OONI Probe CLI v3.24.0.
* Major UI improvements.
* Bug fixes and improvements. 5.0.3 02/27/2025 * Measurement engine synced with OONI Probe CLI v3.24.0.
* Bug fixes and improvements. 3.9.1 12/05/2024 * Update experimental card to include OpenVPN.
* Bug fixes and improvements. 3.9.0 09/02/2024 * Measurement engine synced with OONI Probe CLI v3.23.0.
* Bug fixes and improvements. 3.8.9 08/19/2024 * Measurement engine synced with OONI Probe CLI v3.22.0.
* Bug fixes and improvements. 3.8.8 06/10/2024 * Measurement engine synced with OONI Probe CLI v3.21.0 .
* Bug fixes and improvements. 3.8.7 04/15/2024 * Signal Private Messenger App experiment is fixed!
* Measurement engine synced with OONI Probe CLI v3.20.0 .
* Bug fixes and improvements. 3.8.6 01/31/2024 - Measurement engine synced with OONI Probe CLI v3.19.1
- Bug fixes and Improvements 3.8.5 12/05/2023 - Measurement engine synced with OONI Probe CLI v3.19.0
- Bug fixes and Improvements 3.8.4 10/27/2023 - Measurement engine synced with OONI Probe CLI v3.18.1
- Bug fixes and Improvements 3.8.3 08/11/2023 - Measurement engine synced with OONI Probe CLI 3.17.2
- Bug fixes and Improvements 3.8.2 06/05/2023 Bug fixes and improvements. 3.8.0 04/10/2023 Bug fixes and Improvements 3.7.3 12/19/2022