Comparison

ECG Test for Doctors vs arrhythmia

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

Head to head
About

ECG Test for Doctors

Enhance your ECG interpretation skills with a vast library of real patient cases. This app offers detailed ECG recordings and interactive tests to challenge and improve your diagnostic abilities. Ideal for medical professionals and students seeking to build a strong cardiology foundation.

Highlights
  • 1000+ real patient ECG samples
  • Static images and real-time monitor
  • Interactive interpretation tests
  • Detailed wave analysis
  • Covers numerous ECG findings
  • Challenging case scenarios
Features
Read full description

Test and improve your ECG interpreting skills with 1000+ samples in static images, and real-time monitor. [What users say about us] "Using this as a study guide for my paramedic. It's a good way to look at the whole picture and put your interpretation skills to the test." "This collection of ECGs designed as realtime display is an essential app for every medical practitioner." "This app is great for anyone learning how to read an EKG" "Professional ecg app with nice monitor display" "Awesome app!!! Worth the download and perfect for studying!" The app is very challenging because it uses REAL patients' ECG recordings, and many of them are complicated with multiple diseases involved. The test need you to pick all interpretations, to get a 3-star rate. Wrong picks will buzz your iPhone / iPad and give you a minus score. [Note] 1) All cases are stored in raw data (sample rate is 500 points per second), not static images, so you can look into very detailed waves in pixels 2) You should already have basic knowledge of ECG interpretation, and you use the cases to build a solid cardiology foundation [Findings Covered] Atrial Flutter Atrial Fibrillation Ventricular Fibrillation Escape Beat PAC (Premature Atrial Contruction) PAC Bigeminy PAC Trigeminy PVC (Premature Ventricular Contruction) PVC Bigeminy PVC Trigeminy Supraventricular Tachycardia Ventricular Tachycardia Ventricular Escape Rhythm Ventricular Rhythm QT Prolongation Short QT High T ST Elevation S1,S2,S3 Pattern High Voltage Positive T in V1 Ventricular Hypertrophy LVH Left / Right Atrial Enlargement Left Ventricular Hypertrophy Left Atrial Overload Short PR Interval WPW Syndrome Suspect WPW Syndrome AV Block I (Wenckebach / Mobitz) 2:1 AV Block Complete AV Block Artificial Pacemaker Rhythm(A / V / D) RSR' Pattern IRBBB (Incomplete Right Bundle Branch Block) IVCD (Intraventricular Conduction Block) CRBBB (Complete Right Bundle Branch Block) CLBBB (Complete Left Bundle Branch Block) ICLBBB (Incomplete Left Bundle Branch Block) LAH (Left Anterior Hemi Block) LPH (Left Posterior Hemi Block) BBBB (Bifascicular Bundle Block) TBBB (Trifascicular Bundle Block) Flat T Negative T ST-T Abnormality Premature repolarization Syndrome Poor R Progression Abnormal Q wave Subendcardial Infarction Possible Anterior Infarction Anterior Infarction Anteroseptal Infarction Possible Lateral Infarction Lateral Infarction Inferior Infarction Possible High-Post Infarction Sinus Rhythm Coronary Sinus Rhythm AV Junctional Rhythm AV Dissociation Marked Sinus Bradycardia Sinus Bradycardia Sinus Tachycardia Tachycardia Bradycardia Extreme Tachycardia Extreme Bradycardia Sinus Arrhythmia

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
Read full description

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

ECG Test for Doctors4 screens
arrhythmia4 screens

Verdict

The call

The clearest difference is rating: ECG Test for Doctors at 4.7 against arrhythmia's 4.1. ECG Test for Doctors also leads on monetization model (free with in-app purchases vs subscription) and review sentiment (81% vs 44%). On price, update cadence, 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. ECG Test for Doctors sells 1 one-off in-app purchase and arrhythmia sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ECG Test for Doctors holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 395 and 113 respectively. Written reviews point the same way: 81% of ECG Test for Doctors's written reviews are positive against 44% of arrhythmia's.

UpkeepUpdate frequency

ECG Test for Doctors ships an update monthly, arrhythmia every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
ECG Test for Doctors versus arrhythmia: the parameters behind the verdict, then further details
ParameterECG Test for Doctorsarrhythmia
PriceFreeFree
Rating4.7 (395 ratings) — better4.1 (113 ratings)
Positive reviews80.8% of reviews — better43.9% of reviews
Number of ratings395 — better113
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13.0 — better17.6
Further details — not scored
Size69 MB159 MB
Age rating12+17+
DeveloperWMS, IncSingle Sail Software, LLC

Customer experience

ECG Test for Doctors

All ratings394 ratings
Positive93.1%
Neutral4.3%
Negative2.5%
Written reviews214 reviews
Positive80.8%
Neutral12.1%
Negative7.0%

arrhythmia

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

User reviews

ECG Test for Doctors

From 395 App Store ratings

What we love

  • 👍 Great practice
  • 👍 Helpful study tool
  • 👍 Challenging and keeping you up with the skills needed
  • 👍 Recommended for any junior cardiologists
  • 👍 Good for medics needing practice in ECG interpretations

Room to improve

  • 🐛 Incorrect interpretations
  • 🐛 Lacks basic understanding of 12-lead ECG interpretation
  • 🐛 Asks to identify infarct locations without 12-lead view
  • 🐛 Doesn't tell you what ECG lead you're seeing
  • 🐛 Provides limited options for answers

arrhythmia

From 113 App Store ratings

What we love

  • 👍 Great study tool for EKGs
  • 👍 Helpful for understanding EKGs
  • 👍 Good for practicing rhythm recognition
  • 👍 Interactive and colorful design
  • 👍 Dynamic testing

Room to improve

  • 👎 Immediately asks for paid version
  • 👎 Missing common and important rhythms
  • 👎 Rhythms are unrealistic
  • 👎 Cannot try before signing up
  • 👎 Clunky and slow horizontal scrolling

Bugs and requests

ECG Test for Doctors

Reported bugs

4 issues
  • Incorrect interpretations of rhythms like bigeminy, trigeminy, and ST changes
  • Answers not matching the ECG shown
  • Crashes and freezes on login screen
  • Incompatible with older devices

Requested features

9 requests
  • Add report feature for ECGs missing important findings
  • Provide physiological explanations for rhythms
  • Show the ECG lead being displayed
  • Add more beginner-level ECG cases
  • Provide full coding instead of just a few possible diagnoses
Show 4 more
  • Add opportunity to correct errors in readings
  • Provide full explanations with markup and ability to turn markup on/off
  • Add calipers for measurements
  • Include questions on etiology

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

1 purchases

ECG Test for Doctors

One-time1
  • ECG Pro Bundle$9.99
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 ECG Test for Doctors free?
ECG Test for Doctors is free to download, with in-app purchases available.
Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Which has better reviews, ECG Test for Doctors or arrhythmia?
ECG Test for Doctors is rated higher. ECG Test for Doctors averages 4.7 out of 5 from 395 ratings, while arrhythmia averages 4.1 from 113 ratings.
Do ECG Test for Doctors or arrhythmia have ads?
Neither ECG Test for Doctors nor arrhythmia shows ads.
Which is updated more often, ECG Test for Doctors or arrhythmia?
ECG Test for Doctors ships an update monthly, and arrhythmia every 3 weeks. Most recently, ECG Test for Doctors was updated on October 23, 2026 and arrhythmia on October 24, 2026.

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