# OONI Probe vs SimpleLogin

The clearest difference is in-app purchases: OONI Probe at none against SimpleLogin's 2. SimpleLogin's advantage is rating (4.9 vs 4.5) and review sentiment (84% vs 58%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SimpleLogin sells 2 in-app purchases, starting at $3.99 per month. OONI Probe asks for nothing beyond the download.

SimpleLogin holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: SimpleLogin has 1.3K ratings behind it against 88, 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 84% of SimpleLogin's.

OONI Probe ships an update every 2 months, SimpleLogin every 5 weeks. The most recent releases landed on September 29, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | OONI Probe | SimpleLogin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (88 ratings)](https://appshunter.io/ios/app/ooni-probe/id1199566366/reviews) | **[4.9 (1.3K ratings)](https://appshunter.io/ios/app/simplelogin-email-alias/id1494359858/reviews)** |
| Number of ratings | 88 | **1.3K** |
| Positive reviews | 58.1% of reviews | **83.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | **Free** | Freemium |
| Size | 139 MB | 11 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) | [Proton AG](https://appshunter.io/developer/979659484) |

## 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


### SimpleLogin

[App page](https://appshunter.io/ios/app/simplelogin-email-alias/id1494359858)

Create temporary, anonymous email addresses to protect your personal inbox from spam and tracking. Forward emails to your main inbox and reply from your alias, keeping your real address hidden. Easily disable aliases if they receive unwanted messages.

**Highlights:** Create anonymous email aliases, Forward emails to personal inbox, Reply from alias address, Send emails from alias, Disable aliases to block spam, PGP encryption support, Use custom domains

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (monthly) | $3.99 | per month |
| Premium (yearly) | $39.99 | per year |


## Frequently asked questions

### Is OONI Probe free?

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

### Is SimpleLogin free?

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

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

SimpleLogin is rated higher. OONI Probe averages 4.5 out of 5 from 88 ratings, while SimpleLogin averages 4.9 from 1.3K ratings.

### Do OONI Probe or SimpleLogin have ads?

Neither OONI Probe nor SimpleLogin shows ads.

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

OONI Probe ships an update every 2 months, and SimpleLogin every 5 weeks. Most recently, OONI Probe was updated on September 29, 2026 and SimpleLogin on September 28, 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.*