Comparison

Blood Components vs iArrest

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

Head to head
About

Blood Components

This app provides clinicians with a summary of national guidelines for the appropriate use of blood components. It facilitates robust documentation of transfusion indications, referencing key medical guidelines.

Highlights
  • Summarizes national blood transfusion guidelines
  • Facilitates appropriate blood use
  • Enables documentation of transfusion indications
  • References NBTC, BSH, and NICE guidelines
  • Acts as a clinical reference tool
Features
Read full description

Blood Components App summarises relevant national guidelines to act as a guide for clinicians to facilitate appropriate use of blood and enable robust documentation of indications. The App has been updated and is based on the National Blood Transfusion Committee (NBTC) Indication Codes for Transfusion (2020), the British Society of Haematology (BSH) Guideline on transfusion for foetuses, neonates and older children (2016) and The National Institute for Health and Care Excellence (NICE) Blood transfusion [NG24] guidelines . The App should be used in conjunction with the full guidelines.

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

Blood Components4 screens
iArrest4 screens

Verdict

The call

The clearest difference is iOS requirement: iArrest at 12.0 against Blood Components's 15.1. On price, review sentiment, update cadence and ads 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.

UpkeepUpdate frequency

Blood Components ships an update every 19 months, iArrest every 13 months. Both last shipped on September 21, 2026.

Scorecard1 real difference · 9 level
Blood Components versus iArrest: the parameters behind the verdict, then further details
ParameterBlood ComponentsiArrest
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews100.0% of reviews — better94.1% of reviews
Number of ratings—3 — better
Update frequencyEvery 19 monthsEvery 13 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.112.0 — better
Further details — not scored
Size16 MB31 MB
Age rating17+12+
DeveloperNHSMaximilian Neun

Customer experience

Blood Components

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

iArrest

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

In-app purchases

None

Blood Components

No in-app purchases

None

iArrest

No in-app purchases

Questions

Is Blood Components free?
Blood Components is free to download, with no in-app purchases.
Is iArrest free?
iArrest is free to download, with no in-app purchases.
Do Blood Components or iArrest have ads?
Neither Blood Components nor iArrest shows ads.
Which is updated more often, Blood Components or iArrest?
Blood Components ships an update every 19 months, and iArrest every 13 months. Most recently, Blood Components was updated on September 21, 2026 and iArrest on September 21, 2026.

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