Comparison

iResus vs iArrest

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iResus

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
Read full description

iResus is a free support tool that has been developed by Resuscitation Council UK and Cranworth Medical Ltd. iResus enables the user to access the latest Adult, Paediatric, Newborn resuscitation and anaphylaxis algorithms without the need for an internet connection and is available on a variety of devices. iResus is compliant with the Resuscitation Council UK Guidelines 2021.

About

iArrest

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
Read full description

iArrest was developed to give healthcare professionals a powerful tool to navigate stressful and challenging cardiac arrest calls. Whether as a Paramedic on scene or as a clinician in hospital, this app can assist in running structured and effective adult cardiac arrest scenarios. Developed by clinicians working in large inner city teaching hospitals, this app takes into consideration the most recent Resuscitation Council (UK) Guidelines 2021. It serves as an aide-memoire for basic tasks that can easily be overlooked in stressful scenarios. iArrest also incorporates a number of timers to assist with rhythm analysis, adrenaline timings and arrest documentation. It will remind the user via audible and visual cues about necessary interventions even if a clinician’s phone is muted. iArrest has been programmed to prevent phones from going into sleep mode, in order to ensure continuous use throughout the arrest. iArrest will record the exact time an important event or an intervention has occurred and present the user with a detailed log of events. These logs can be copied to the clipboard and used for documentation and record keeping. iArrest is currently undergoing extensive testing in simulated and real world scenarios. We are continuously improving and expanding on iArrest’s functionality. Disclaimer: iArrest can not replace sound knowledge in Advance Life Support and should not be used by non-ALS trained clinicians. Use this app at your own risk and always use appropriate clinical judgement. Please familiarise yourself with the functionality of this app before using it in real life scenarios. The creators of this app shall not be liable for any claims or losses arising from the use or misuse of this app, its contents, any omissions from its contents, or otherwise. By using this app you agree to these terms and conditions.

Screenshots

iResus4 screens
iArrest4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

iResus ships an update every 7 months, iArrest every 13 months. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
iResus versus iArrest: the parameters behind the verdict, then further details
ParameteriResusiArrest
PriceFreeFree
Rating5.0 (4 ratings)5.0 (3 ratings)
Positive reviews50.0% of reviews94.1% of reviews — better
Number of ratings4 — better3
Update frequencyEvery 7 months — betterEvery 13 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better12.0
Further details — not scored
Size7 MB31 MB
Age rating17+12+
DeveloperRESUSCITATION COUNCIL (U.K.) TRADING LTDMaximilian Neun

Customer experience

iResus

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews24 reviews
Positive50.0%
Neutral4.2%
Negative45.8%

iArrest

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews17 reviews
Positive94.1%
Neutral0.0%
Negative5.9%

In-app purchases

None

iResus

No in-app purchases

None

iArrest

No in-app purchases

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 21, 2026 and iArrest on October 8, 2026.

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