# OONI Probe vs Círculo

The clearest difference is rating: Círculo at 5.0 against OONI Probe's 4.5. OONI Probe's advantage is ratings volume (88 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Círculo holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: OONI Probe has 88 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | OONI Probe | Círculo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (88 ratings)](https://appshunter.io/ios/app/ooni-probe/id1199566366/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/circulo/id1571749642/reviews)** |
| Number of ratings | **88** | 1 |
| Positive reviews | 58.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 139 MB | 109 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Tor Project](https://appshunter.io/developer/1199566365) | [Postmodern Apps LLC](https://appshunter.io/developer/1071768141) |

## What reviewers say

### OONI Probe

[App page](https://appshunter.io/ios/app/ooni-probe/id1199566366)

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:** Vision Pro support

**In-app purchases:** none


### Círculo

[App page](https://appshunter.io/ios/app/circulo/id1571749642)

Connect with a trusted network of six individuals to share alerts and keep each other informed. Establish safety protocols and ensure your community stays updated on important events.

**Highlights:** Connect with a network of six peers, Establish safety protocols, Send and receive alerts, Keep your circle informed, Community-driven safety

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OONI Probe free?

OONI Probe is free to download, with no in-app purchases.

### Is Círculo free?

Círculo is free to download, with no in-app purchases.

### Which has better reviews, OONI Probe or Círculo?

Círculo is rated higher. OONI Probe averages 4.5 out of 5 from 88 ratings, while Círculo averages 5.0 from 1 ratings.

### Do OONI Probe or Círculo have ads?

Neither OONI Probe nor Círculo shows ads.

### Which is updated more often, OONI Probe or Círculo?

OONI Probe ships an update every 2 months, and Círculo every 2 months. Most recently, OONI Probe was updated on October 3, 2026 and Círculo on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*