# Ferret OSINT vs mailin

The clearest difference is in-app purchases: Ferret OSINT at none against mailin's 4. Ferret OSINT also leads on iOS requirement (15.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. mailin sells 4 in-app purchases, starting at $4.99 per month. Ferret OSINT asks for nothing beyond the download.

Ferret OSINT ships an update every 3 months, mailin every 2 months. Both last shipped on October 31, 2026.

## The numbers

| Metric | Ferret OSINT | mailin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 20 MB | 37 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Konstantin Shvetsov](https://appshunter.io/developer/1882517293) | [Shrabani Sasmal](https://appshunter.io/developer/1817131561) |

## What reviewers say

### Ferret OSINT

[App page](https://appshunter.io/ios/app/ferret-osint/id6760048642)

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

**In-app purchases:** none


### mailin

[App page](https://appshunter.io/ios/app/mailin/id6767245397)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| mailin personal monthly | $4.99 | per month |
| mailin professional monthly | $9.99 | per month |
| personal yearly 01 | $44.99 | per year |
| mailin professional yearly | $79.99 | per year |


## Frequently asked questions

### Is Ferret OSINT free?

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

### Is mailin free?

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

### Do Ferret OSINT or mailin have ads?

Neither Ferret OSINT nor mailin shows ads.

### Which is updated more often, Ferret OSINT or mailin?

Ferret OSINT ships an update every 3 months, and mailin every 2 months. Most recently, Ferret OSINT was updated on October 31, 2026 and mailin on October 31, 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.*