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Download OONI Probe 1.3.1 APK
Target: Android 8.0 (Oreo, API 26)
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What's new in OONI Probe 1.3.1
New tests for measuring the blocking of WhatsApp, Facebook Messenger, and Telegram!
Run these tests to collect data confirming whether and how these apps are blocked by your ISP.
About OONI Probe 1.3.1
Collect evidence of Internet censorship. Measure the speed and performance of your network. Play an active role in increasing transparency of information controls around the world.
By running OONI Probe, you will examine the blocking of websites, your network's speed and performance, and whether systems that could be responsible for censorship and surveillance are in your network.
Premium
These tests have been 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 has collected millions of network measurements across more than 190 countries, shedding light on multiple cases of network interference. By running OONI Probe, you will help increase transparency of Internet censorship around the world.
Collecting evidence of Internet censorship
OONI's Web Connectivity test is designed to examine whether access to sites is blocked through DNS tampering, TCP/IP blocking, or by a transparent HTTP proxy. By running this test, you will collect data that can serve as evidence of Internet censorship, and you will be provided with circumvention tips.
Detecting systems responsible for censorship and surveillance
OONI's HTTP Invalid Request Line test is designed to uncover the presence of systems that could be responsible for censorship and surveillance.
Measuring the speed and performance of your network
OONI's implementation of the Network Diagnostic Test (NDT) measures the speed of your network by connecting to M-Lab servers near you and by collecting low level TCP/IP information that can help characterize the speed and performance of your network.
Open data
OONI publishes all network measurement data that it collects because open data allows third parties to conduct independent studies, verify OONI findings and/or to answer other research questions. Such data also helps increase transparency of Internet censorship around the world. All data is published on OONI Explorer: explorer.ooni.torproject.org/
Free software
All OONI tests, as well as its NDT implementation, are based on free and open source software. You can find the source code through the following link: github.com/thetorproject/ooniprobe-android
Follow us on Twitter: twitter.com/OpenObservatory
Please note: 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 may be banned, and use web censorship circumvention methods such as Tor. 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).
OONI Probe 1.3.1 variants
This release may come in several variants. Consult our handy FAQ to see which download is right for you.
Version:6.1.1
Uploaded:August 7, 2026 at 5:51AM UTC
File size:64.59 MB
Version:1.3.2(27) for Android 4.0+ (Ice Cream Sandwich, API 14)
Uploaded:May 17, 2018 at 7:46PM UTC
File size:17.03 MB
Downloads:160
Version:1.3.1(24) for Android 4.0+ (Ice Cream Sandwich, API 14)
Uploaded:January 31, 2018 at 5:33AM UTC
File size:23.91 MB
Downloads:167
Version:1.3.0(21) for Android 4.0+ (Ice Cream Sandwich, API 14)
Uploaded:January 12, 2018 at 7:18PM UTC
File size:23.90 MB
Downloads:107
Version:1.2.3(17) for Android 4.0+ (Ice Cream Sandwich, API 14)
Uploaded:October 9, 2017 at 3:54PM UTC
File size:22.88 MB
Downloads:163
Version:1.2.2(16) for Android 4.0+ (Ice Cream Sandwich, API 14)
Uploaded:September 27, 2017 at 2:34PM UTC
File size:22.92 MB
Downloads:89
Version:1.1.5(11) for Android 4.0+ (Ice Cream Sandwich, API 14)
Uploaded:August 11, 2017 at 4:12PM UTC
File size:22.91 MB
Downloads:120
Version:6.1.1
Uploaded:July 5, 2026 at 6:21PM UTC
File size:9.30 MB
Downloads:13
Version:5.3.0
Uploaded:November 27, 2025 at 1:42AM UTC
File size:36.98 MB
Downloads:30
Version:5.2.2
Uploaded:November 27, 2025 at 1:42AM UTC
File size:53.93 MB
Downloads:2
Version:5.1.0
Uploaded:June 28, 2025 at 3:09PM UTC
File size:52.52 MB
Downloads:11
Version:5.0.6
Uploaded:May 19, 2025 at 7:54PM UTC
File size:51.53 MB
Downloads:16
Version:4.0.2
Uploaded:December 23, 2024 at 10:09AM UTC
File size:23.85 MB
Downloads:23
Version:4.0.1
Uploaded:December 5, 2024 at 5:42PM UTC
File size:23.85 MB
Downloads:14
Version:4.0.0
Uploaded:October 15, 2024 at 4:02PM UTC
File size:23.70 MB
Downloads:12
Version:3.9.0
Uploaded:September 12, 2024 at 4:18PM UTC
File size:22.40 MB
Downloads:12
Version:3.8.9
Uploaded:August 21, 2024 at 8:49AM UTC
File size:22.40 MB
Downloads:12
