Introduction:
Overview and Basic Information to OONI Probe
OONI Probe is a free, open-source network measurement tool designed to help you detect internet censorship and monitor network performance. Created by the Open Observatory of Network Interference (OONI), a project under The Tor Project, this app enables users worldwide to test if websites, messaging apps, and circumvention tools are blocked on their network. It also evaluates connection speed and identifies potential surveillance systems. Since 2012, the global OONI community has collected millions of measurements from over 200 countries, providing transparent, real-time data about network interference. This application is essential for journalists, activists, and anyone concerned about internet freedom.
Advantages of OONI Probe
One major strength of this tool is its complete transparency—all test results are published as open data immediately after running a test. This allows independent researchers and the public to verify findings and track censorship events globally. The application is entirely free and open-source, meaning anyone can inspect the code or contribute on platforms like GitHub. It offers multiple test types, including website blocking checks, speed measurements via NDT, and video streaming quality analysis through DASH. Additionally, the software requires no special technical knowledge to operate, making it accessible for everyday users who want to understand their network conditions.
Disadvantages of OONI Probe
The software can consume significant mobile data during extended testing sessions, which may be a concern for users with limited data plans. Some tests, particularly the video streaming analysis, might take several minutes to complete. The app relies on an active internet connection to perform measurements, so it cannot function offline. Results are automatically published unless you disable this feature, which could raise privacy concerns for users in sensitive regions. Finally, interpreting the technical data requires some basic understanding of network terminology, though the app provides simple pass/fail indicators for general use.
Main Highlights
OONI Probe stands out with its ability to test specific messaging apps like WhatsApp, Facebook Messenger, and Telegram for blocking—a feature not commonly found in standard network tools. The application automatically publishes every measurement to OONI Explorer, creating a public archive that human rights defenders and researchers can use as evidence. Its DASH test evaluates video streaming quality in real-time, helping users identify throttling by internet service providers. The software also includes a "Run All Tests" option for comprehensive network analysis with a single tap, streamlining the user experience.
Guide and Usage Tips
Start by downloading OONI Probe and granting necessary permissions like location and network access for accurate measurements. Run the "Websites" test first to check if common sites are accessible on your network. For faster results, use the "Run All" feature during off-peak hours to minimize data usage. Review results in the "Recent Tests" tab, where green icons indicate normal access and red flags suggest potential blocking. To save mobile data, connect to Wi-Fi before running larger tests like NDT or DASH. Disable automatic result publishing in settings if you prefer not to share your data publicly.
Conclusion
For individuals living under restricted internet environments or those curious about network performance, OONI Probe offers a reliable, transparent way to document censorship and monitor speed. Its open-data approach strengthens global efforts to defend online freedom. While the app requires some data and patience for thorough testing, its unique capabilities make it invaluable for activists, researchers, and privacy-conscious users. Download OONI Probe today to start contributing to a more open internet and gain clear insights into your network's true condition.
