# iResus vs iArrest

iResus and iArrest both sit at 5.0 stars, but that hides the real split: 94% of iArrest's written reviews are positive against 50% of iResus's. iResus's advantage is iOS requirement (9.0 vs 12.0). On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for iResus against 5.0 for iArrest. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews are what separate them: 50% of iResus's written reviews are positive against 94% of iArrest's.

iResus ships an update every 7 months, iArrest every 13 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | iResus | iArrest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/iresus/id1034079078/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/iarrest/id1280974002/reviews) |
| Number of ratings | **4** | 3 |
| Positive reviews | 50.0% of reviews | **94.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 7 MB | 31 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [RESUSCITATION COUNCIL (U.K.) TRADING LTD](https://appshunter.io/developer/1034079077) | [Maximilian Neun](https://appshunter.io/developer/1280974001) |

## What reviewers say

### iResus

[App page](https://appshunter.io/ios/app/iresus/id1034079078)

Access the latest adult, pediatric, newborn resuscitation, and anaphylaxis algorithms offline. This free tool is compliant with Resuscitation Council UK Guidelines 2021 and available on multiple devices.

**Highlights:** Offline algorithm access, Adult resuscitation guidelines, Pediatric resuscitation guidelines, Newborn resuscitation guidelines, Anaphylaxis algorithms, Compliant with UK guidelines

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is iResus free?

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

### Is iArrest free?

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

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

iResus and iArrest are both rated 5.0 out of 5 on the App Store, from 4 and 3 ratings respectively.

### Do iResus or iArrest have ads?

Neither iResus nor iArrest shows ads.

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

iResus ships an update every 7 months, and iArrest every 13 months. Most recently, iResus was updated on October 24, 2026 and iArrest on October 24, 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.*