Comparison

OONI Probe vs Geul

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full 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: 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

About

Geul

Features
Read full description

Geul is a collection of text utilities designed to make every moment of handling text faster and simpler. Without going through complex programs or websites, you can handle everything from character counting to clearing spaces, organizing line breaks, converting case, and finding-and-replacing—all in one single app. ▶ Key Features · Character Count Check length with/without spaces, word count, line count, and UTF-8 bytes all at once. · Case Converter Supports conversion to UPPERCASE, lowercase, Title Case, and Sentence case. · Remove Spaces Clean up text by options: leading/trailing spaces, duplicate spaces, or removing all spaces. · Organize Line Breaks Remove unnecessary line breaks and tidy up text line by line. · Sort Text Sort lines alphabetically (A-Z) or by length. · Remove Special Characters & Emojis Selectively remove emojis or special characters from your text. · Find & Replace Powerful text replacement that even supports Regular Expressions (Regex). · Remove Duplicate Lines Automatically filter out and clean up repeated lines. · Base64 Encode/Decode Convert text to Base64 or decode it back. · Reverse Text Flip the order of characters backward. ▶ Features for a Smoother Workflow · Recent History Automatically saves recently processed text for each tool, so you can recall it anytime. · Favorites Save frequently used text or conversion patterns to your favorites for instant access. · Quick Copy & Paste Instantly copy results to your clipboard or share them with other apps. ▶ Recommended for: · Anyone looking to clean up text before writing reports, emails, or documents. · Bloggers and SNS content creators who need to check character counts. · Developers or data professionals who frequently need text conversion. · Anyone who wants to tidy up text copied from Excel, notes, or code. No complex setups—see your results the instant you type. Make your text tasks faster and simpler with Geul today.

Screenshots

OONI Probe4 screens
Geul4 screens

Verdict

The call

The clearest difference is ads: OONI Probe at none against Geul's shown. On price, update cadence, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 9 level
OONI Probe versus Geul: the parameters behind the verdict, then further details
ParameterOONI ProbeGeul
PriceFreeFree
Rating4.5 (88 ratings) — better—
Positive reviews58.1% of reviews—
Number of ratings88 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size139 MB31 MB
Age rating4+4+
DeveloperThe Tor ProjectJAEMIN LEE

In-app purchases

None

OONI Probe

No in-app purchases

None

Geul

No in-app purchases

Questions

Is OONI Probe free?
OONI Probe is free to download, with no in-app purchases.
Is Geul free?
Geul is free to download, with no in-app purchases.
Do OONI Probe or Geul have ads?
Geul shows ads; OONI Probe does not.
Which is updated more often, OONI Probe or Geul?
OONI Probe ships an update every 2 months, and Geul every 2 months. Most recently, OONI Probe was updated on October 20, 2026 and Geul on October 6, 2026.

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