# AuthMonster vs Inbox Zero

The clearest difference is in-app purchases: AuthMonster at none against Inbox Zero's 2. AuthMonster also leads on iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Inbox Zero sells 2 in-app purchases, starting at $19.99 per month. AuthMonster asks for nothing beyond the download.

## The numbers

| Metric | AuthMonster | Inbox Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/authmonster/id6755841999/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | **Free** | Subscription |
| Size | 76 MB | 35 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Moonfoot Labs](https://appshunter.io/developer/1842953162) | [Inbox Zero Inc.](https://appshunter.io/developer/1880462164) |

## What reviewers say

### AuthMonster

[App page](https://appshunter.io/ios/app/authmonster/id6755841999)

This app simplifies two-factor authentication with a friendly, playful interface. It generates secure one-time codes, supports quick QR code scanning, and offers offline access to codes, making online security enjoyable and easy to manage.

**Highlights:** Generate secure one-time codes (TOTP), QR code scanning for quick account setup, Offline access to authentication codes, Organized and easy-to-find accounts, Simple and intuitive user interface, Playful monster theme

**In-app purchases:** none


### 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 AuthMonster free?

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

### Is Inbox Zero free?

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

### Do AuthMonster or Inbox Zero have ads?

Neither AuthMonster nor Inbox Zero shows ads.

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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.*