# Opty vs CDAC Authenticator

The clearest difference is device support: Opty at 2 against CDAC Authenticator's —. CDAC Authenticator's advantage is iOS requirement (13.0 vs 16.6). On price and in-app purchases 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 | Opty | CDAC Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 2 weeks | — |
| Size | 23 MB | 27 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [Abhishek Diwakar](https://appshunter.io/developer/1859662850) | [CENTRE FOR DEVELOPMENT OF ADVANCED COMPUTING](https://appshunter.io/developer/1108324524) |

## What reviewers say

### Opty

[App page](https://appshunter.io/ios/app/opty-2fa-authenticator/id6756269442)

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

**In-app purchases:** none


### CDAC Authenticator

[App page](https://appshunter.io/ios/app/cdac-authenticator/id6759152856)

**In-app purchases:** none


## Frequently asked questions

### Is Opty free?

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

### Is CDAC Authenticator free?

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

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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.*