# Digital Identity Authenticator vs MDU

The clearest difference is review sentiment: Digital Identity Authenticator at 100% against MDU's 17%. MDU's advantage is iOS requirement (12.2 vs 17.0). On price, update cadence, ads 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.

Digital Identity Authenticator ships an update every 4 months, MDU every 3 months. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Digital Identity Authenticator | MDU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/mdu/id1335570470/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 11 MB | 165 MB |
| Requires iOS | 17.0 | **12.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [OneAdvanced Limited](https://appshunter.io/developer/596412777) | [The Medical Defence Union](https://appshunter.io/developer/1335570468) |

## What reviewers say

### Digital Identity Authenticator

[App page](https://appshunter.io/ios/app/digital-identity-authenticator/id1229109210)

This app provides secure and convenient access to NHS clinical systems using a cloud-based virtual smartcard. It offers faster authentication, simplified logins, and two-factor security for e-prescribing and other critical healthcare applications.

**Highlights:** NHS Spine and Windows AD authentication, Faster, simpler, and safer access, Two-factor authentication via QR code or push, Digital signature for e-prescribing, Cloud-based and device-agnostic, Easy self-service portal

**Features:** macOS Compatibility

**In-app purchases:** none


### MDU

[App page](https://appshunter.io/ios/app/mdu/id1335570470)

Access expert medico-legal advice for medical professionals. Find guidance on patient confidentiality, prescribing, complaints, and more through articles, case studies, and quick guides. Tailor your feed and access membership details offline.

**Highlights:** Expert medico-legal advice, Quick guides and case studies, Searchable articles, Tailorable news feed, Offline reading, Membership card access

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

**In-app purchases:** none


## Frequently asked questions

### Is Digital Identity Authenticator free?

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

### Is MDU free?

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

### Do Digital Identity Authenticator or MDU have ads?

Neither Digital Identity Authenticator nor MDU shows ads.

### Which is updated more often, Digital Identity Authenticator or MDU?

Digital Identity Authenticator ships an update every 4 months, and MDU every 3 months. Most recently, Digital Identity Authenticator was updated on October 13, 2026 and MDU on October 1, 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.*