# AuthenticCF vs o

The clearest difference is iOS requirement: AuthenticCF at 13.3 against o's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | AuthenticCF | o |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 113 MB | 13 MB |
| Requires iOS | **13.3** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Imprensa Nacional-Casa da Moeda S.A.](https://appshunter.io/developer/1367188525) | [ZMTEUROPE, SA](https://appshunter.io/developer/1781870979) |

## What reviewers say

### AuthenticCF

[App page](https://appshunter.io/ios/app/authenticcf/id1517617241)

**In-app purchases:** none


### o

[App page](https://appshunter.io/ios/app/o-passe/id6747403607)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AuthenticCF free?

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

### Is o free?

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

### Do AuthenticCF or o have ads?

Neither AuthenticCF nor o 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.*