OONI Probe
OONI Probe is made and published by The Tor Project. AppBrain is an independent app data site and isn't affiliated with The Tor Project. The app name, icon, screenshots and description belong to The Tor Project and are shown as published on the App Store.
AppBrain's verdict
Established- Rating on App Store
- 4.53
- 91 ratings
- Last updated
- September 24, 2026
It doesn't have enough ratings yet to judge what users think.
Rankings
App Store top chartsApp Store Rankings for OONI Probe
Competitors
Similar apps and more from The Tor Project
Releases
Updates seen on the App Store- Version
- 6.2.1
- Launched
- February 2017
No changelog data
User feedback
Ratings and reviews on the App StoreComments on OONI Probe for iOS
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 138.5 MB
- Content rating
- Everyone
Technologies used by OONI Probe
About the app and developer
About OONI Probe
OONI Probe is an utilities app developed by The Tor Project.
User Ratings
OONI Probe is rated 4.53 out of 5 stars. The rating is based on 91 ratings.
App Information
OONI Probe is freely available from the App Store. The app size is 138.51 MB. The latest version available is 6.2.1. The last update was on September 24, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since February 2017.
Developer information for The Tor Project
Address:
Frequently asked questions about OONI Probe
Is OONI Probe free?
Yes. OONI Probe is free on the App Store.
Is OONI Probe still available?
Yes. OONI Probe is on the App Store, and the last update we saw was on September 24, 2026.
How large is OONI Probe?
OONI Probe is 138.51 MB.
Is OONI Probe suitable for children?
App Store rates the content of OONI Probe as suitable for everyone.
How do people rate OONI Probe?
OONI Probe scores 4.53 out of 5 stars, from 91 ratings on the App Store.
Who made OONI Probe?
OONI Probe was developed by The Tor Project. It is listed in the utilities category on the App Store.
What are the best alternatives to OONI Probe?
People looking at OONI Probe also look at these utilities apps: BeePass VPN, Wehe, HE.NET Network Tools, SSTP Connect, 5BB.
Store listing
By The Tor Project, from the App Store
Description by The Tor Project Written by the developer, not by AppBrain. Click to read.
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