Comparison

iArrest vs Messly

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

Head to head
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.

About

Messly

This app connects physicians with locum tenens staffing companies. Build a profile detailing your preferences and receive direct pitches for assignments with rates shown upfront. You control who you communicate with, streamlining the job search process.

Highlights
  • Personalized job profile
  • Upfront rate information
  • Anonymity until shared
  • Direct assignment pitches
  • Control over communication
  • All-in-one messaging and calls
Features
Read full description

Find locum tenens work that pays more and fits your life. Most physicians pick a staffing company more or less at random, hand over their details and hope for the best. Register with a few more and you're filling in the same forms again, then fielding calls you never asked for. It shouldn't be this hard. Messly works the other way round. You build one profile saying what you want. Hand-picked staffing companies pitch you real assignments, with the rate shown upfront. You choose who to talk to. HOW IT WORKS 1. Tell us what you want Your specialty, the states you're licensed in, IMLC, availability, schedule, minimum rate and how far you'll travel. It takes a few minutes, and you stay anonymous: recruiters only see your first name. 2. Get pitched real assignments Recruiters send matched assignments straight to your Messly inbox, with the rate, location and schedule upfront. No vague promises of work that never materializes. 3. Choose who you talk to See who each recruiter is and which staffing company they work for before you reply. When you like an assignment, book a call at a time that suits you. Your contact details are only shared with the companies you choose. 4. Start working The staffing company you pick handles credentialing and gets you started, as normal. There's no obligation at any point. WHY PHYSICIANS USE MESSLY The best assignments: access to a hand-picked group of the best locum tenens staffing companies, in one place Rates upfront: see the pay on every assignment before you engage No spam: you're anonymous until you choose to share your details, so no unsolicited calls, texts or emails You're in control: turn your profile off any time and nobody can contact you. Turn it back on in one tap Everything in one app: assignments, messages and calls, on your phone or computer. WHO IT'S FOR Attending physicians, fellows and residents looking to moonlight, in every specialty. Whether you're new to locum tenens or looking for a better staffing company than the one you have, Messly takes the guesswork out. MESSLY IS NOT A STAFFING COMPANY We don't place you ourselves. We bring the best staffing companies together, hold them to a strict code of conduct, and let you choose who to work with. Any company that falls short is removed, and our team is on hand if you ever need help. Over 45,000 physicians have used Messly to find locum tenens work in the UK and Australia. Messly is part of M3 and a sister company to PracticeMatch. FOR RECRUITERS Already on Messly? The same app keeps you on top of your desk when you're away from it. See recommended physicians matched to your alerts, view anonymized profiles, manage your inbox and message physicians, with push alerts for new messages and newly shared physicians. Sign in with your existing Messly account. Questions? We're here to help at support@messly.com

Screenshots

iArrest4 screens
Messly4 screens

Verdict

The call

The clearest difference is update cadence: Messly at every 3 months against iArrest's every 13 months. iArrest's advantage is ratings volume (3 vs 1) and iOS requirement (12.0 vs 15.4). On price, rating, ads and in-app purchases 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 iArrest against 5.0 for Messly. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

iArrest ships an update every 13 months, Messly every 3 months. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 7 level
iArrest versus Messly: the parameters behind the verdict, then further details
ParameteriArrestMessly
PriceFreeFree
Rating5.0 (3 ratings)5.0 (1 ratings)
Positive reviews94.1% of reviews—
Number of ratings3 — better1
Update frequencyEvery 13 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.4
Further details — not scored
Size31 MB34 MB
Age rating12+4+
DeveloperMaximilian NeunMessly

Customer experience

iArrest

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

Messly

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iArrest

No in-app purchases

None

Messly

No in-app purchases

Questions

Is iArrest free?
iArrest is free to download, with no in-app purchases.
Is Messly free?
Messly is free to download, with no in-app purchases.
Which has better reviews, iArrest or Messly?
iArrest and Messly are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.
Do iArrest or Messly have ads?
Neither iArrest nor Messly shows ads.
Which is updated more often, iArrest or Messly?
iArrest ships an update every 13 months, and Messly every 3 months. Most recently, iArrest was updated on November 3, 2026 and Messly on November 6, 2026.

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