Comparison

arrhythmia vs EKGDX

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

Head to head
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
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

About

EKGDX

This comprehensive educational platform offers extensive resources for learning electrocardiogram interpretation. It includes detailed criteria, guidelines, cardiac trials, and a vast gallery of multimedia content. Practice with various EKG cases and track your progress with an analytical dashboard.

Highlights
  • EKG Criteria and Guidelines
  • Extensive Multimedia Gallery
  • EKG Practice Qbanks
  • Volume II EKG Challenges
  • Learning Progress Dashboard
  • Cardiac Trials and References
Features
Read full description

Welcome to EKGDX: The only EKG App that contains everything you need. EKGDX is a brand new multi-language online educational platform focused on electrocardiograms. This App is a superb addition to the library of every medical student, nurse, intern, resident, physicians in practice, cardiology fellows that are interested in improving their interpretation of EKGs and preparing for board examinations. The educational content of the App is organized as follows: Criteria - Contains all the electrocardiographic criteria of each pattern. - Guidelines. - Cardiac trials. - References (1500+ scientific articles). Gallery - More than 500 videos (echocardiograms, angiograms, MRIs, CCTs, EP cases, etc.). - Heart sounds (auscultation). - 3D Animations. - Illustrations. - EKG Cases. - Podcast. - And much more. Volume I - It contains several qbanks with different levels of complexity, which will allow you to practice in a simple way with single-lead EKGs. Volume II - Volume II (Set A) contains 100 EKG challenges, from basic principles to clinical presentation. Each case study is presented in the standard twelve-lead EKG with ABIM answer sheet, ideally suited for physicians preparing for the Cardiovascular Disease Certification Exam and other exams requiring EKG interpretation. Dashboard - The dashboard contains several graphs that help you to analyze your learning process. At the same time, you will be able to identify you knowledge gaps and target areas to improve. Top 10 - The Top 10 contains the most popular cases of the App. In other words, the more visits a case receives, the more popular it becomes. The subscription (2.99 USD/month) includes: - Full access to the Criteria. - Full access to the Gallery. - Full access to the Qbanks. - Full access to the Dashboard. - Full access to the Guidelines. - Full access to the Cardiac Trials. - 1500+ scientific articles. - Continuous updates. - Cancel any time. - Volume II is not included. Volume II (As low as $2.99/month) - Volume II (Set A) contains 100 EKG Challenges. - Standard twelve-lead EKG format. - ABIM answer sheet. - Timer questions. So what are you waiting for? Download the best EKG App today! If you have any questions or concerns, do not hesitate to contact us. Thank you for using EKGDX. Regards, EKGDX team. Privacy: https://ekgdx.com/privacy/ Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

arrhythmia4 screens
EKGDX4 screens

Verdict

The call

The clearest difference is review sentiment: EKGDX at 89% against arrhythmia's 44%. EKGDX also leads on rating (4.5 vs 4.1) and iOS requirement (12.0 vs 17.6). arrhythmia's advantage is chart position (#181 vs unranked) and update cadence (every 3 weeks vs every 2 months). On price, ratings volume, 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. arrhythmia sells 3 in-app purchases, starting at $2.99 per month and EKGDX sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

EKGDX holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 113 and 39 respectively. Written reviews point the same way: 44% of arrhythmia's written reviews are positive against 89% of EKGDX's.

UpkeepUpdate frequency

arrhythmia ships an update every 3 weeks, EKGDX every 2 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 6 level
arrhythmia versus EKGDX: the parameters behind the verdict, then further details
ParameterarrhythmiaEKGDX
PriceFreeFree
Rating4.1 (113 ratings)4.5 (39 ratings) — better
Positive reviews43.9% of reviews88.9% of reviews — better
Number of ratings113 — better39
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionSubscription
Best chart rank#181 — better—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.612.0 — better
Further details — not scored
Size159 MB21 MB
Age rating17+17+
DeveloperSingle Sail Software, LLCAlbert Roig

Customer experience

arrhythmia

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

EKGDX

All ratings37 ratings
Positive89.2%
Neutral0.0%
Negative10.8%
Written reviews36 reviews
Positive88.9%
Neutral0.0%
Negative11.1%

Bugs and 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

EKGDX

Not enough reviews yet to summarise bugs or requests.

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
5 purchases

EKGDX

Subscriptions1
  • Premium$9.991 Month
One-time4
  • Boards - Final Test 2$5.99
  • Boards - Final Test 12 variants$7.99
  • Boards - Final Test 2$7.99
Show 1 more
  • Boards$7.99

Questions

Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Is EKGDX free?
EKGDX is free to download, with in-app purchases available.
Which has better reviews, arrhythmia or EKGDX?
EKGDX is rated higher. arrhythmia averages 4.1 out of 5 from 113 ratings, while EKGDX averages 4.5 from 39 ratings.
Do arrhythmia or EKGDX have ads?
Neither arrhythmia nor EKGDX shows ads.
Which is updated more often, arrhythmia or EKGDX?
arrhythmia ships an update every 3 weeks, and EKGDX every 2 months. Most recently, arrhythmia was updated on October 29, 2026 and EKGDX on October 30, 2026.

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