# OONI Probe vs Tella

The clearest difference is review sentiment: OONI Probe at 58% against Tella's 0%. OONI Probe also leads on rating (4.5 vs 3.8) and ratings volume (91 vs 4). 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.

OONI Probe holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: OONI Probe has 91 ratings behind it against 4, 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 Tella's.

OONI Probe ships an update every 2 months, Tella every 6 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | OONI Probe | Tella |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (91 ratings)](https://appshunter.io/ios/app/ooni-probe/id1199566366/reviews)** | [3.8 (4 ratings)](https://appshunter.io/ios/app/tella-document-and-protect/id1598152580/reviews) |
| Number of ratings | **91** | 4 |
| Positive reviews | **58.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 139 MB | 66 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Tor Project](https://appshunter.io/developer/1199566365) | [Horizontal](https://appshunter.io/developer/1509844527) |

## 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


### Tella

[App page](https://appshunter.io/ios/app/tella-document-and-protect/id1598152580)

Securely store and organize your photos, videos, and audio recordings within an encrypted vault. Capture content directly inside the app to ensure its privacy and protection.

**Highlights:** Encrypted file storage, Folder organization, In-app camera, In-app video recording, In-app audio recording

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

**In-app purchases:** none


## Frequently asked questions

### Is OONI Probe free?

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

### Is Tella free?

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

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

OONI Probe is rated higher. OONI Probe averages 4.5 out of 5 from 91 ratings, while Tella averages 3.8 from 4 ratings.

### Do OONI Probe or Tella have ads?

Neither OONI Probe nor Tella shows ads.

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

OONI Probe ships an update every 2 months, and Tella every 6 weeks. Most recently, OONI Probe was updated on October 24, 2026 and Tella 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.*