# Authenticator App vs What's This Mail?

The clearest difference is in-app purchases: Authenticator App at none against What's This Mail?'s 1. Authenticator App also leads on device support (5 vs 2) and iOS requirement (15.0 vs 17.6). On price and ads there is nothing between them.

Both are free to download. What's This Mail? sells 1 in-app purchase, starting at $9.99 per month. Authenticator App asks for nothing beyond the download.

## The numbers

| Metric | Authenticator App | What's This Mail? |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (34K ratings)](https://appshunter.io/ios/app/authenticator-app-oneauth/id1142928979/reviews)** | — |
| Number of ratings | **34K** | — |
| Positive reviews | 44.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free | — |
| Size | 220 MB | 297 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zoho Corporation](https://appshunter.io/developer/388384807) | [Cloudjet Solutions Pte. Ltd.](https://appshunter.io/developer/1857847432) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-oneauth/id1142928979)

Secure your online accounts with industry-standard two-factor authentication. Easily add accounts, generate time-based OTPs, and benefit from encrypted backups. Organize and manage your TFA with features like folders, brand logos, and search.

**Highlights:** Add accounts via QR code or manual entry, Time-based OTPs (offline access), Encrypted backup and secure recovery, Sync secrets across devices, Organize accounts with folders, Brand logos for easy identification, Passwordless sign-in options

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick and efficient
- 🔒 Very secure
- 👍 Easy to use
- 💡 Has Apple Watch app

**What reviewers complain about**

- 🐛 Unreliable notifications
- 🐛 Confusing user interface
- 🐛 Inconsistent behavior
- 🐛 Difficult to navigate
- 🐛 Locked out of accounts

**Reported bugs**

- Push notifications not working
- Endless authentication loops
- Incompatibility with new devices
- Locking users out of accounts

**Requested features**

- Support for multiple accounts
- Ability to export data to other authenticator apps
- Improved error handling and feedback
- Simpler setup and onboarding process


### What's This Mail?

[App page](https://appshunter.io/ios/app/whats-this-mail/id6777709949)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| What's This Mail Plus | $9.99 | per month |


## Frequently asked questions

### Is Authenticator App free?

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

### Is What's This Mail? free?

What's This Mail? is free to download, with in-app purchases available.

### Do Authenticator App or What's This Mail? have ads?

Neither Authenticator App nor What's This Mail? 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.*