OONI Probe vs GATE 19 Guard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OONI Probe
This app helps you detect internet censorship and surveillance systems by examining website and app blocking. It also measures your network's speed and performance, providing data that can serve as evidence of interference. All collected data is published openly to promote transparency.
- Examine website and app blocking
- Measure network speed and performance
- Detect censorship and surveillance systems
- Collect evidence of internet censorship
- Publish open network measurement data
- Free and open source software
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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
GATE 19 Guard
This app helps protect your digital life by checking for data leaks, scanning links for threats, and generating strong passwords. It also provides security tips and tracks your security events.
- Data leak search for email and passwords
- URL scanner for phishing and malware
- Strong password generator
- Online security tips
- Security event tracking
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GATE 19 Guard is your personal digital security assistant. Key features: — Data Leak Search Check if your email and passwords have appeared in known data breaches. We analyze databases of compromised accounts and notify you if your data is found. — URL Scanner Check any link before you click. The scanner analyzes antivirus databases, phishing site databases, and reputation services. — Password Generator Create strong passwords of any length with customizable options: lowercase and uppercase letters, digits, special symbols. — Security Tips Simple and clear recommendations to help protect your data online. — Security Events Track the history of your checks, discovered risks, and system actions in one place.
Screenshots
Verdict
The clearest difference is rating: GATE 19 Guard at 5.0 against OONI Probe's 4.5. GATE 19 Guard also leads on update cadence (every 10 days vs every 2 months). OONI Probe's advantage is ratings volume (91 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
GATE 19 Guard holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: OONI Probe has 91 ratings behind it against 1, so its average is the more settled of the two.
OONI Probe ships an update every 2 months, GATE 19 Guard every 10 days. Both last shipped on October 24, 2026.
| Parameter | OONI Probe | GATE 19 Guard |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (91 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 58.1% of reviews | — |
| Number of ratings | 91 — better | 1 |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 139 MB | 85 MB |
| Age rating | 4+ | 17+ |
| Developer | The Tor Project | test126 |
Customer experience
OONI Probe
GATE 19 Guard
In-app purchases
OONI Probe
No in-app purchases
GATE 19 Guard
No in-app purchases









