# addy.io extension vs Fastmask

The clearest difference is in-app purchases: addy.io extension at none against Fastmask's 3. addy.io extension also leads on device support (4 vs 2) and iOS requirement (15.0 vs 26.0). Fastmask's advantage is update cadence (every 6 days vs every 4 weeks). On price and ads there is nothing between them.

Both are free to download. Fastmask sells 3 one-off in-app purchases. addy.io extension asks for nothing beyond the download.

addy.io extension ships an update every 4 weeks, Fastmask every 6 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | addy.io extension | Fastmask |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 6 days** |
| Size | 7 MB | 7 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [addy.io](https://appshunter.io/developer/1758544549) | [Vitali Quiering](https://appshunter.io/developer/1857447419) |

## What reviewers say

### addy.io extension

[App page](https://appshunter.io/ios/app/addyio-extension/id6670220050)

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


### Fastmask

[App page](https://appshunter.io/ios/app/fastmask/id6755937522)

**Features:** Safari Extension, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multi Account | $2.99 | one-time |
| Unlimited Aliases | $3.99 | one-time |
| Pro Bundle | $6.99 | one-time |


## Frequently asked questions

### Is addy.io extension free?

addy.io extension is free to download, with no in-app purchases.

### Is Fastmask free?

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

### Do addy.io extension or Fastmask have ads?

Neither addy.io extension nor Fastmask shows ads.

### Which is updated more often, addy.io extension or Fastmask?

addy.io extension ships an update every 4 weeks, and Fastmask every 6 days. Most recently, addy.io extension was updated on October 25, 2026 and Fastmask on October 25, 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.*