- New layout for measurement details screen
- New languages: Swahili and Dutch
- OONI logo included in Test Results screen

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: 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: github.com/ooni. Curious to learn how OONI Probe tests work? Learn more: ooni.io/nettest/

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

See available downloads
A more recent upload may be available below!
Download

This release comes in several variants (we currently have 2). Consult our handy FAQ to see which download is right for you.

Variant
Arch
Version
DPI
3.3.0 BUNDLE 21 S
80
September 20, 2021
universal
Android 5.0+
160-640dpi
3.3.0 APK
80
September 20, 2021
universal
Android 5.0+
nodpi
All Releases
OONI Probe 3.7.2
November 24, 2022

Version:3.7.2

Uploaded:November 24, 2022 at 2:05PM UTC

File size:8.56 MB

Downloads:12

OONI Probe 3.7.1
August 25, 2022

Version:3.7.1

Uploaded:August 25, 2022 at 1:03PM UTC

File size:8.55 MB

Downloads:31

OONI Probe 3.7.0

Version:3.7.0

Uploaded:July 13, 2022 at 3:12PM UTC

File size:7.64 MB

Downloads:35

OONI Probe 3.6.0
February 28, 2022

Version:3.6.0

Uploaded:February 28, 2022 at 6:32PM UTC

File size:7.68 MB

Downloads:98

OONI Probe 3.5.0
December 17, 2021

Version:3.5.0

Uploaded:December 17, 2021 at 3:44PM UTC

File size:7.67 MB

Downloads:53

OONI Probe 3.4.1
November 26, 2021

Version:3.4.1

Uploaded:November 26, 2021 at 6:02PM UTC

File size:7.67 MB

Downloads:46

OONI Probe 3.4.0
November 18, 2021

Version:3.4.0

Uploaded:November 18, 2021 at 4:29PM UTC

File size:7.67 MB

Downloads:29

OONI Probe 3.3.1
October 4, 2021

Version:3.3.1

Uploaded:October 4, 2021 at 8:26PM UTC

File size:7.4 MB

Downloads:65

OONI Probe 3.3.0
September 20, 2021

Version:3.3.0

Uploaded:September 20, 2021 at 6:14PM UTC

File size:7.4 MB

Downloads:49

OONI Probe 3.2.0

Version:3.2.0

Uploaded:July 26, 2021 at 11:18AM UTC

File size:7.29 MB

Downloads:79

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