# Cral Ataf vs Duo Authenticator

The clearest difference is in-app purchases: Cral Ataf at none against Duo Authenticator's 3. Cral Ataf also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Duo Authenticator sells 3 in-app purchases, starting at $3.99 per 7 days. Cral Ataf asks for nothing beyond the download.

Cral Ataf ships an update every 3 weeks, Duo Authenticator monthly. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Cral Ataf | Duo Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (24 ratings)](https://appshunter.io/ios/app/duo-authenticator/id1665454984/reviews)** |
| Number of ratings | — | **24** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 27 MB | 60 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Witapp S.R.L.](https://appshunter.io/developer/1084372942) | [Petr Polasek](https://appshunter.io/developer/1613323784) |

## What reviewers say

### Cral Ataf

[App page](https://appshunter.io/ios/app/cral-ataf/id1258101168)

**Features:** macOS Compatibility

**In-app purchases:** none


### Duo Authenticator

[App page](https://appshunter.io/ios/app/duo-authenticator/id1665454984)

Enhance your online security with this multi-factor authentication app. It provides an extra layer of protection for your accounts by generating time-sensitive codes, even when offline. Secure your sensitive information with ease and peace of mind.

**Highlights:** Quick and easy setup, Wide service compatibility, Time-sensitive security codes, Offline code generation, End-to-end encryption, Security code protection

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Week | $3.99 | per 7 days |
| Premium 1 Month | $9.99 | per month |
| Premium 1 Year | $29.99 | per year |


## Frequently asked questions

### Is Cral Ataf free?

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

### Is Duo Authenticator free?

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

### Do Cral Ataf or Duo Authenticator have ads?

Duo Authenticator shows ads; Cral Ataf does not.

### Which is updated more often, Cral Ataf or Duo Authenticator?

Cral Ataf ships an update every 3 weeks, and Duo Authenticator monthly. Most recently, Cral Ataf was updated on October 5, 2026 and Duo Authenticator on October 9, 2026.

---

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