Comparison

ACLS Review vs arrhythmia

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

Head to head
About

ACLS Review

Prepare for your ACLS certification or renewal with realistic practice exams and study cards. This app offers scenario-based questions, detailed rationales, and integrated ECG strips based on the latest American Heart Association guidelines. Track your progress and share scores with others.

Highlights
  • Realistic practice exams
  • Scenario-based questions
  • Detailed rationale answers
  • Integrated ECG strips
  • Unlimited exam retakes
  • Study cards for key topics
  • Score history tracking
Features
Read full description

Whether a first-time student or back for renewal, our ACLS app provides high-quality, realistic practice examinations based on the most recent American Heart Association guidelines. ACLS Review Includes: • Four 25-question practice exams matching AHA style and content areas • Scenario-based questions like you will see on the exam • Detailed rationale answers for each question to help you master course content. • Integrated ECG strips for interpretation practice. Strips may be expanded to full screen for easy viewing. • Take the exams as many times as you wish—and they never expire. • Over 200 study cards in the topics BLS, Pharmacology, ALS, and Algorithm review. • Score history tracks your progress as you complete exams. • Share scores with fellow students, colleagues or instructors. Realistic practice for understanding and treating life-threatening cardiac emergencies and arrhythmias. The questions and scenarios in ACLS Review are based on the current American Heart Association guidelines and are always kept up-to-date. Learn how to more easily recognize life-threatening cardiac emergencies and arrhythmias.

About

arrhythmia

Practice interpreting EKGs in lead II with realistic simulations. Choose rhythms to study or test your knowledge in a game mode. Ideal for healthcare professionals to hone their diagnostic skills.

Highlights
  • EKG interpretation practice
  • Lead II simulation
  • Study Mode with rhythm selection
  • Game Mode for random rhythm identification
  • Customizable rhythm sets
  • Realistic rhythm variations
Currently charting
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Practice reading EKGs in lead II Basic EKG interpretation is more accurately described as an intermediate level skill that takes time, practice and refreshing. Whether you are a doctor, nurse, EMT or tech your ability to read and pickup on basic EKG changes in real time is essential. Practice with an app that actually looks like what you see at work. Use the app’s ‘Study Mode’ to choose one or multiple rhythms to view and compare. A brief description of each rhythm is provided, you can also pause and restart rhythms. Delete and add specific rhythms as desired. Rates, amplitudes and widths of the rhythms are dynamically set which provides for a more realistic simulation and variation within each type of rhythm. Use the app’s ‘Game Mode’ to challenge yourself to identify rhythms presented randomly in lead II. If desired, you can also custom specify which rhythms to include in the game. Access to Study Mode and Game Mode requires a subscription via in-app purchase. Please Read: The purpose of this app is not to teach basic EKG interpretation but rather to practice basic EKG interpretation. If you don’t know basic EKG interpretation seek out additional resources such as classes, books, online materials and mentors to learn more and further your understanding. Note: The cardiac rhythms presented by the app are simulated approximations. There is NO guarantee to the accuracy of rhythms presented. While accuracy is not guaranteed it is a goal. Please report errors, suggestions or general feedback to: feedback@arrhythmiaApp.com. Arrhythmia uses the standard Apple Terms of Use End User License Agreement (EULA): http://www.apple.com/legal/itunes/appstore/dev/stdeula

Screenshots

ACLS Review4 screens
arrhythmia4 screens

Verdict

The call

The clearest difference is price: arrhythmia at Free against ACLS Review's $5.99. arrhythmia also leads on rating (4.1 vs 2.6) and update cadence (every 3 weeks vs every 8 months). ACLS Review's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement 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

arrhythmia is free to download; ACLS Review costs $5.99 up front. arrhythmia sells 3 in-app purchases, starting at $2.99 per month. ACLS Review asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

arrhythmia holds the better App Store score, 4.1 against 2.6. That said, the two scores are not equally well evidenced: arrhythmia has 113 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 25% of ACLS Review's written reviews are positive against 44% of arrhythmia's.

UpkeepUpdate frequency

ACLS Review ships an update every 8 months, arrhythmia every 3 weeks. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

Scorecard8 real differences · 3 level
ACLS Review versus arrhythmia: the parameters behind the verdict, then further details
ParameterACLS Reviewarrhythmia
Price$5.99Free — better
Rating2.6 (5 ratings)4.1 (113 ratings) — better
Positive reviews25.0% of reviews43.9% of reviews — better
Number of ratings5113 — better
Update frequencyEvery 8 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
Best chart rank—#198 — better
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.617.6
Further details — not scored
Size51 MB159 MB
Age rating17+17+
DeveloperLimmer CreativeSingle Sail Software, LLC

Customer experience

ACLS Review

All ratings5 ratings
Positive20.0%
Neutral20.0%
Negative60.0%
Written reviews8 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

arrhythmia

All ratings111 ratings
Positive80.2%
Neutral4.5%
Negative15.3%
Written reviews41 reviews
Positive43.9%
Neutral7.3%
Negative48.8%

Bugs and requests

ACLS Review

Not enough reviews yet to summarise bugs or requests.

arrhythmia

Reported bugs

2 issues
  • App no longer works after iOS update
  • App does not work on Apple Watch

Requested features

11 requests
  • Add more common and important rhythms (torsades, WPW, STEMI, accelerated/tachycardic idioventricular, WAP, MAT)
  • Option to read as a 12-lead instead of a single rhythm line
  • Add variations to rhythms
  • Add Left Bundle Branch Block
  • Add a 12-lead option
Show 6 more
  • Add more examples for each rhythm
  • Add a list view option for rhythms
  • Add an explanation/rationale for correct/incorrect answers
  • Add an animation showing what is happening in the heart when an answer is wrong
  • Add tutorial or information on how to use the app
  • Add 'Non-Conducted' PACs and similar rhythms

In-app purchases

None

ACLS Review

No in-app purchases

3 purchases

arrhythmia

Subscriptions2
  • Monthly7 Days trial$2.991 Month
  • Yearly7 Days trial$19.991 Year
One-time1
  • Unlock All Rhythms (One-time Purchase)$4.99

Questions

Is ACLS Review free?
ACLS Review costs $5.99, with no in-app purchases.
Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Which has better reviews, ACLS Review or arrhythmia?
arrhythmia is rated higher. ACLS Review averages 2.6 out of 5 from 5 ratings, while arrhythmia averages 4.1 from 113 ratings.
Do ACLS Review or arrhythmia have ads?
Neither ACLS Review nor arrhythmia shows ads.
Which is updated more often, ACLS Review or arrhythmia?
ACLS Review ships an update every 8 months, and arrhythmia every 3 weeks. Most recently, ACLS Review was updated on October 29, 2026 and arrhythmia on October 26, 2026.

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