# NCP Authenticator vs DoorBell32

The clearest difference is iOS requirement: DoorBell32 at 12.1 against NCP Authenticator'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 | NCP Authenticator | DoorBell32 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | — |
| Size | 18 MB | 31 MB |
| Requires iOS | 15.1 | **12.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [N C P E GmbH Network Communications Products Engineering](https://appshunter.io/developer/1187926974) | [Juergen Holzmann](https://appshunter.io/developer/1568186011) |

## What reviewers say

### NCP Authenticator

[App page](https://appshunter.io/ios/app/ncp-authenticator/id1483468626)

**In-app purchases:** none


### DoorBell32

[App page](https://appshunter.io/ios/app/doorbell32/id1590794333)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NCP Authenticator free?

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

### Is DoorBell32 free?

DoorBell32 is free to download, with no in-app purchases.

### Do NCP Authenticator or DoorBell32 have ads?

Neither NCP Authenticator nor DoorBell32 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.*