# DN Authenticator vs OTAC auth

The clearest difference is update cadence: OTAC auth at every 6 weeks against DN Authenticator's every 4 months. 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.

DN Authenticator ships an update every 4 months, OTAC auth every 6 weeks. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | DN Authenticator | OTAC auth |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 30 MB | 10 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Diebold Nixdorf Incorporated](https://appshunter.io/developer/1434560706) | [swIDch Limited](https://appshunter.io/developer/1723421198) |

## What reviewers say

### DN Authenticator

[App page](https://appshunter.io/ios/app/dn-authenticator/id1440611617)

This application allows authorized technicians to temporarily disable security features on Diebold Nixdorf terminals. It works in conjunction with the Vynamic Security Suite by importing privilege files to grant elevated access for servicing.

**Highlights:** Temporary security disablement, Vynamic Security Suite integration, Instant Privilege file import, Elevated terminal access, Technician servicing tool

**In-app purchases:** none


### OTAC auth

[App page](https://appshunter.io/ios/app/otac-auth/id6475137518)

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

**In-app purchases:** none


## Frequently asked questions

### Is DN Authenticator free?

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

### Is OTAC auth free?

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

### Do DN Authenticator or OTAC auth have ads?

Neither DN Authenticator nor OTAC auth shows ads.

### Which is updated more often, DN Authenticator or OTAC auth?

DN Authenticator ships an update every 4 months, and OTAC auth every 6 weeks. Most recently, DN Authenticator was updated on October 10, 2026 and OTAC auth on October 5, 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.*