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OONI Probe

Measure Internet Censorship, Speed & Performance
New in version 5.0.6
* Measurement engine synced with OONI Probe CLI v3.25.0.
* Fix running OONI Run link tests with large amounts of URLs.
* Dark-mode splash screen on Android.
* Other bug fixes and improvements.
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

Donate

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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 5.0.6 (204) suggested Added on Apr 22, 2025

    x86_64

    This version requires Android 7.0 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
    • 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

    Download APK 71 MiB PGP Signature | Build Log

  • Version 5.0.6 (203) - Added on Apr 22, 2025

    x86

    This version requires Android 7.0 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
    • 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

    Download APK 65 MiB PGP Signature | Build Log

  • Version 5.0.6 (202) - Added on Apr 22, 2025

    arm64-v8a

    This version requires Android 7.0 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
    • 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

    Download APK 68 MiB PGP Signature | Build Log

  • Version 5.0.6 (201) - Added on Apr 22, 2025

    armeabi-v7a

    This version requires Android 7.0 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
    • 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

    Download APK 62 MiB PGP Signature | Build Log

  • Version 5.0.5 (194) - Added on Mar 23, 2025

    x86_64

    This version requires Android 7.0 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
    • 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

    Download APK 69 MiB PGP Signature | Build Log

  • Version 5.0.5 (193) - Added on Mar 23, 2025

    x86

    This version requires Android 7.0 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
    • 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

    Download APK 63 MiB PGP Signature | Build Log

  • Version 5.0.5 (192) - Added on Mar 23, 2025

    arm64-v8a

    This version requires Android 7.0 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
    • 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

    Download APK 66 MiB PGP Signature | Build Log

  • Version 5.0.5 (191) - Added on Mar 23, 2025

    armeabi-v7a

    This version requires Android 7.0 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
    • 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

    Download APK 61 MiB PGP Signature | Build Log

  • Version 5.0.3 (164) - Added on Feb 23, 2025

    x86_64

    This version requires Android 7.0 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
    • 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

    Download APK 69 MiB PGP Signature | Build Log

  • Version 5.0.3 (163) - Added on Feb 23, 2025

    x86

    This version requires Android 7.0 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
    • 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

    Download APK 63 MiB PGP Signature | Build Log

  • Version 5.0.3 (162) - Added on Feb 23, 2025

    arm64-v8a

    This version requires Android 7.0 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
    • 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

    Download APK 66 MiB PGP Signature | Build Log

  • Version 5.0.3 (161) - Added on Feb 23, 2025

    armeabi-v7a

    This version requires Android 7.0 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
    • 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

    Download APK 60 MiB PGP Signature | Build Log

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