Comparison

arrhythmia vs ECG FlashCards

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

ECG FlashCards

This app provides quick reference ECGs of cardiac arrhythmias for medical professionals. It's designed for emergency situations or exam preparation, focusing on rhythm strips to avoid confusion. Users should have basic ECG knowledge.

Highlights
  • ECG reference for cardiac arrhythmias
  • Focus on rhythm strips (lead II)
  • Covers conduction abnormalities
  • Ideal for emergencies
  • Useful for exam revision
Features
Read full description

Ever got confused with atrial flutter and fibrillation? What is the difference between Mobitz type I and II? The ECGs of cardiac arrhythmias are very confusing. Particularly so in Emergencies. This app contains ECGs of all types of cardiac arrhythmias for immediate reference. To avoid confusion all the ECGs are taken from rhythm strip (lead II), as we look for rhythm only in these ECGs. If you have any issues, please notify me to the mail id provided. This app is intended for medics who already have some basic knowledge about ECG and its terminology. Its main purpose is to provide reference ECGs of arrhythmias in emergency situation or rapid revision of the topic for those preparing for exams. Do not expect detailed explanation for the ECGs. There are totally 46 ECGs related to conduction abnormalities. Hope this app will be helpful to you. And please do leave a rating in the store! For beta testing or receiving promotional codes for paid apps, please visit our website https://goo.gl/qFwhna Note: The app looks better in landscape. Keep your mobile in autorotation mode.

Screenshots

arrhythmia4 screens
ECG FlashCards2 screens

Verdict

The call

The clearest difference is review sentiment: arrhythmia at 45% against ECG FlashCards's 0%. arrhythmia also leads on rating (4.2 vs 3.5) and update cadence (every 3 weeks vs every 13 months). ECG FlashCards's advantage is in-app purchases (none vs 3) and iOS requirement (9.0 vs 17.6). On price, ads and device support 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. ECG FlashCards asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

arrhythmia holds the better App Store score, 4.2 against 3.5. That said, the two scores are not equally well evidenced: arrhythmia has 111 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 45% of arrhythmia's written reviews are positive against 0% of ECG FlashCards's.

UpkeepUpdate frequency

arrhythmia ships an update every 3 weeks, ECG FlashCards every 13 months. The most recent releases landed on September 21, 2026 and June 4, 2026 respectively.

Scorecard8 real differences · 3 level
arrhythmia versus ECG FlashCards: the parameters behind the verdict, then further details
ParameterarrhythmiaECG FlashCards
PriceFreeFree
Rating4.2 (111 ratings) — better3.5 (4 ratings)
Positive reviews45.0% of reviews — better0.0% of reviews
Number of ratings111 — better4
Update frequencyEvery 3 weeks — betterEvery 13 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
Best chart rank#188 — better—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.69.0 — better
Further details — not scored
Size159 MB13 MB
Age rating17+17+
DeveloperSingle Sail Software, LLCSree Hari Reddy Gadekallu

Customer experience

arrhythmia

All ratings111 ratings
Positive80.2%
Neutral4.5%
Negative15.3%
Written reviews40 reviews
Positive45.0%
Neutral7.5%
Negative47.5%

ECG FlashCards

All ratings4 ratings
Positive50.0%
Neutral25.0%
Negative25.0%
Written reviews3 reviews
Positive0.0%
Neutral33.3%
Negative66.7%

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
None

ECG FlashCards

No in-app purchases

Questions

Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Is ECG FlashCards free?
ECG FlashCards is free to download, with no in-app purchases.
Which has better reviews, arrhythmia or ECG FlashCards?
arrhythmia is rated higher. arrhythmia averages 4.2 out of 5 from 111 ratings, while ECG FlashCards averages 3.5 from 4 ratings.
Do arrhythmia or ECG FlashCards have ads?
Neither arrhythmia nor ECG FlashCards shows ads.
Which is updated more often, arrhythmia or ECG FlashCards?
arrhythmia ships an update every 3 weeks, and ECG FlashCards every 13 months. Most recently, arrhythmia was updated on September 21, 2026 and ECG FlashCards on June 4, 2026.

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