# OONI Probe vs Sherlock

The clearest difference is review sentiment: OONI Probe at 58% against Sherlock's 0%. OONI Probe also leads on rating (4.5 vs 3.7) and in-app purchases (none vs 5). Sherlock's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Sherlock sells 5 in-app purchases, starting at $2.99 per month. OONI Probe asks for nothing beyond the download.

OONI Probe holds the better App Store score, 4.5 against 3.7. That said, the two scores are not equally well evidenced: OONI Probe has 91 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 58% of OONI Probe's written reviews are positive against 0% of Sherlock's.

OONI Probe ships an update every 2 months, Sherlock every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | OONI Probe | Sherlock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (91 ratings)](https://appshunter.io/ios/app/ooni-probe/id1199566366/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/sherlock-osint/id6753150438/reviews) |
| Number of ratings | **91** | 3 |
| Positive reviews | **58.1% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 139 MB | 49 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Tor Project](https://appshunter.io/developer/1199566365) | [IMMOACTIVAT I ASSOCIATS SL](https://appshunter.io/developer/1800941159) |

## 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


### Sherlock

[App page](https://appshunter.io/ios/app/sherlock-osint/id6753150438)

This app offers a suite of professional open-source intelligence tools for in-depth investigations. Analyze phone numbers, emails, domains, and social media profiles. Access IoT device data and scan network ports for vulnerabilities.

**Highlights:** Phone number analysis, Email forensics, Shodan Pro search, Domain analysis, Social media username search, Port scanner, Reputation checker, Metadata extractor

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per month |
| Pack Starter | $3.99 | one-time |
| Basic | $8.99 | one-time |
| Pack PRO | $17.99 | one-time |
| Pack ULTIMATE | $44.99 | one-time |


## Frequently asked questions

### Is OONI Probe free?

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

### Is Sherlock free?

Sherlock is free to download, with in-app purchases available.

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

OONI Probe is rated higher. OONI Probe averages 4.5 out of 5 from 91 ratings, while Sherlock averages 3.7 from 3 ratings.

### Do OONI Probe or Sherlock have ads?

Sherlock shows ads; OONI Probe does not.

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

OONI Probe ships an update every 2 months, and Sherlock every 3 weeks. Most recently, OONI Probe was updated on October 24, 2026 and Sherlock on October 24, 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.*