# Authenticator App One vs CatAuth

The clearest difference is ads: CatAuth at none against Authenticator App One's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Authenticator App One sells 1 in-app purchase, starting at $9.99 per 7 days and CatAuth sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Authenticator App One ships an update every 3 weeks, CatAuth every 2 weeks. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Authenticator App One | CatAuth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/authenticator-app-one/id6780641796/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 46 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EdgeAI](https://appshunter.io/developer/1817435374) | [RICHYARD GEIMS, TOO](https://appshunter.io/developer/1712845899) |

## What reviewers say

### Authenticator App One

[App page](https://appshunter.io/ios/app/authenticator-app-one/id6780641796)

This app generates secure two-factor authentication codes for your online accounts. It offers encrypted storage, instant backup, and easy account management for services like Google, Facebook, and more. Protect your digital life with a simple and reliable authentication solution.

**Highlights:** Secure 2FA & MFA code generation, Fast QR code setup, Manual setup key entry, Encrypted 2FA storage, Instant backup access, Organized account management

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Start Free Trial Now | $9.99 | per 7 days |


### CatAuth

[App page](https://appshunter.io/ios/app/catauth-2fa-authenticator/id6788870191)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $6.99 | per 7 days |
| Premium Weekly Trial | $6.99 | per 7 days |
| Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is Authenticator App One free?

Authenticator App One is free to download, with in-app purchases available.

### Is CatAuth free?

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

### Do Authenticator App One or CatAuth have ads?

Authenticator App One shows ads; CatAuth does not.

### Which is updated more often, Authenticator App One or CatAuth?

Authenticator App One ships an update every 3 weeks, and CatAuth every 2 weeks. Most recently, Authenticator App One was updated on September 22, 2026 and CatAuth on September 21, 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.*