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Download OONI Probe (f-droid version) APK 5.2.2 arm64-v8a · Android 24+

By The Tor Project • Updated March 06, 2026
Tools arm64-v8a Native (Java/Kotlin) 71.63 MB
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This is the arm64-v8a build of OONI Probe (f-droid version) 5.2.2 — the modern 64-bit ARM build that runs on virtually every Android phone released since 2017. It's smaller and faster than the universal variant because Android only loads the native code your CPU actually needs. If your phone is from the last 8 years, this is the right pick.

File size: 71.6 MB   •   Min Android: 24   •   Target Android: 36   •   Version code: 242   •   Framework: Native (Java/Kotlin)   •   Permissions: 9

File Information

Package Nameorg.openobservatory.ooniprobe
Version Name5.2.2
Version Code242
Architecturearm64-v8a
Min Android VersionAndroid 24 (API 36)
Main Activityorg.ooni.probe.MainActivity
FrameworkNative (Java/Kotlin)
File Size71.63 MB
Signature (SHA1)FC85098C1EC26016541DD0F672EF6BC597BA3B5D
File Hash (SHA256)15940a1031bf2048db1e0d2ef180616feb7f9487f8184dd7ba915efe83fb7bc4

What's New

New in version 5.2.2
* Measurement engine updated to OONI Probe CLI v3.27.0
* Various minor bug fixes and enhancements

App Description

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

Author:

Open Observatory of Network Interference

License:

BSD 2-Clause "Simplified" License

Website

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Source Code

Changelog

Build Metadata

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APK Permissions 9

  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.FOREGROUND_SERVICE
  • android.permission.FOREGROUND_SERVICE_DATA_SYNC
  • android.permission.INTERNET
  • android.permission.POST_NOTIFICATIONS
  • android.permission.RECEIVE_BOOT_COMPLETED
  • android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
  • android.permission.WAKE_LOCK
  • org.openobservatory.ooniprobe.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
APK Verified

The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way.

Other Variants

This release has multiple variants (e.g. diff architectures).

armeabi-v7a x86 x86_64
Developer

Name: The Tor Project

See All Versions View on Google Play

Frequently Asked Questions about OONI Probe (f-droid version) APK

This variant is built for 64-bit ARM (most Android phones made since 2017). If your device's CPU matches, this is the smallest, fastest version to install.

Yes — the APK's signature has been cryptographically verified against the publisher's signing key. The SHA-256 hash is shown in the File Information panel so you can independently confirm the file matches the original release.

Android 24 (API level 36) or newer. Older devices will refuse the install.

Install a free app like 'CPU-Z' or 'Droid Hardware Info' from the Play Store and look at the ABI / Instruction Set row. Most phones made after 2017 are arm64-v8a; if in doubt, download the universal variant.

All variants are functionally identical — same features, same version. They differ only in which CPU architectures the native code is compiled for, and (sometimes) which screen densities the included graphics target. Pick the one that matches your device for the smallest install size, or pick 'Universal' if you're unsure.