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OONI Probe

Open Observatory of Network Interference (OONI)
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. Curious to learn how OONI Probe tests
work? Learn more here.

To receive updates from the OONI-verse,
follow us on Twitter

Disclaimer: Running OONI Probe might be against the terms of service of your ISP
or legally questionable in your country. By running OONI Probe, you will connect
to web services which might be banned. The OONI project will publish data
submitted by probes, possibly including your IP address or other identifying
information. In addition, your use of OONI Probe will be clear to anyone who has
access to your computer, and to anyone who can monitor your Internet connection
(such as your employer, ISP or government). Learn more about potential risks
here

Donate

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 4.0.0 (122) - Added on Oct 25, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "dataSync"
      Allows the app to make use of foreground services with the type "dataSync"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • org.openobservatory.ooniprobe.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
    • org.openobservatory.ooniprobe.permission.C2D_MESSAGE

    Download APK 102 MiB PGP Signature | Build Log

  • Version 3.9.0 (118) - Added on Sep 12, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "dataSync"
      Allows the app to make use of foreground services with the type "dataSync"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • org.openobservatory.ooniprobe.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
    • org.openobservatory.ooniprobe.permission.C2D_MESSAGE

    Download APK 101 MiB PGP Signature | Build Log

  • Version 3.8.9 (117) - Added on Aug 26, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "dataSync"
      Allows the app to make use of foreground services with the type "dataSync"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • org.openobservatory.ooniprobe.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
    • org.openobservatory.ooniprobe.permission.C2D_MESSAGE

    Download APK 101 MiB PGP Signature | Build Log