# iArrest vs MDU

The clearest difference is review sentiment: iArrest at 94% against MDU's 17%. iArrest also leads on rating (5.0 vs 4.0) and ratings volume (3 vs 1). MDU's advantage is update cadence (every 3 months vs every 13 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

iArrest holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 94% of iArrest's written reviews are positive against 17% of MDU's.

iArrest ships an update every 13 months, MDU every 3 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | iArrest | MDU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/iarrest/id1280974002/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/mdu/id1335570470/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **94.1% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 31 MB | 165 MB |
| Requires iOS | **12.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Maximilian Neun](https://appshunter.io/developer/1280974001) | [The Medical Defence Union](https://appshunter.io/developer/1335570468) |

## What reviewers say

### iArrest

[App page](https://appshunter.io/ios/app/iarrest/id1280974002)

This app assists healthcare professionals during cardiac arrest calls by providing structured guidance based on the latest resuscitation guidelines. It includes timers for critical interventions and generates detailed event logs for documentation. Designed for paramedics and hospital clinicians, it acts as a reminder for essential tasks in high-pressure situations.

**Highlights:** Structured cardiac arrest guidance, Adult resuscitation scenarios, Based on UK Resuscitation Council Guidelines 2021, Timers for rhythm analysis and adrenaline, Audible and visual intervention reminders, Continuous use prevention of sleep mode, Detailed event logging

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

**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 iArrest free?

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

### Is MDU free?

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

### Which has better reviews, iArrest or MDU?

iArrest is rated higher. iArrest averages 5.0 out of 5 from 3 ratings, while MDU averages 4.0 from 1 ratings.

### Do iArrest or MDU have ads?

Neither iArrest nor MDU shows ads.

### Which is updated more often, iArrest or MDU?

iArrest ships an update every 13 months, and MDU every 3 months. Most recently, iArrest was updated on October 8, 2026 and MDU on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*