# Fastmask vs Inbox Zero

The clearest difference is iOS requirement: Inbox Zero at 18.0 against Fastmask's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Fastmask sells 3 one-off in-app purchases and Inbox Zero sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

Fastmask ships an update every 6 days, Inbox Zero weekly. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Fastmask | Inbox Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/inbox-zero-ai-email-assistant/id6759736561/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | — | Subscription |
| Size | 7 MB | 35 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vitali Quiering](https://appshunter.io/developer/1857447419) | [Inbox Zero Inc.](https://appshunter.io/developer/1880462164) |

## What reviewers say

### 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 |


### Inbox Zero

[App page](https://appshunter.io/ios/app/inbox-zero-ai-email-assistant/id6759736561)

This email client offers a fast, offline-capable experience for Gmail and Outlook, featuring an AI assistant for managing your inbox. It allows for easy unsubscribing, smart inbox organization, and quick replies.

**Highlights:** AI email assistant, Offline access, Unsubscribe from senders, Split inbox by tabs, Quick swipe actions, Scheduled sending, Undo send

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inbox Zero Starter Monthly | $19.99 | per month |
| Inbox Zero Starter Annual | $199.99 | per year |


## Frequently asked questions

### Is Fastmask free?

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

### Is Inbox Zero free?

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

### Do Fastmask or Inbox Zero have ads?

Neither Fastmask nor Inbox Zero shows ads.

### Which is updated more often, Fastmask or Inbox Zero?

Fastmask ships an update every 6 days, and Inbox Zero weekly. Most recently, Fastmask was updated on November 5, 2026 and Inbox Zero on November 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*