Comparison

ECG Simulator 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 Simulator

This application allows users to send over 200 types of ECG signal data to a connected simulator device via BLE. It helps test and verify the functionality of ECG machines by generating test signals based on uploaded data.

Highlights
  • Over 200 ECG signal types
  • BLE device connection
  • Upload ECG data
  • Generate test signals
  • Verify ECG machine functionality
Features
Read full description

The app provides over 200 types of ECG signal data that can be sent to the Simulator device through BLE connection. It covers the fundamental standard ECG signals as well as the complicated real ECG cases, to test and verify the ECG machines' functionalities. Steps of operation - 1. Power on the ECG Simulator device 2. Open the app and scan for the device by tapping the bluetooth icon 3. Connect to the device by tapping it once it appears on the main screen 4. When connected, open an ECG signal data 5. Tap the upload icon on the top right corner, to send the ECG data to the device 6. When it is done, the ECG Simulator device starts to interpret and compile the data, and then generate a test signal based on the data 7. Hook up an ECG machine to the simulator device, it should print out the same ECG To purchase the SIM device, please contact: cathyfeib@vhecg.com

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 Simulator4 screens
arrhythmia4 screens

Verdict

The call

The clearest difference is rating: arrhythmia at 4.2 against ECG Simulator's 3.0. arrhythmia also leads on update cadence (every 3 weeks vs every 24 months) and ratings volume (111 vs 2). ECG Simulator's advantage is in-app purchases (none vs 3) and iOS requirement (7.0 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 Simulator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

arrhythmia holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: arrhythmia has 111 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

ECG Simulator ships an update every 24 months, arrhythmia every 3 weeks. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

Scorecard6 real differences · 4 level
ECG Simulator versus arrhythmia: the parameters behind the verdict, then further details
ParameterECG Simulatorarrhythmia
PriceFreeFree
Rating3.0 (2 ratings)4.2 (111 ratings) — better
Positive reviews—43.9% of reviews
Number of ratings2111 — better
Update frequencyEvery 24 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS7.0 — better17.6
Further details — not scored
Size10 MB159 MB
Age rating12+17+
DeveloperVales & Hills BioMedical Tech. LtdSingle Sail Software, LLC

Customer experience

ECG Simulator

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

arrhythmia

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

In-app purchases

None

ECG Simulator

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 ECG Simulator free?
ECG Simulator is free to download, with no in-app purchases.
Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Which has better reviews, ECG Simulator or arrhythmia?
arrhythmia is rated higher. ECG Simulator averages 3.0 out of 5 from 2 ratings, while arrhythmia averages 4.2 from 111 ratings.
Do ECG Simulator or arrhythmia have ads?
Neither ECG Simulator nor arrhythmia shows ads.
Which is updated more often, ECG Simulator or arrhythmia?
ECG Simulator ships an update every 24 months, and arrhythmia every 3 weeks. Most recently, ECG Simulator was updated on October 12, 2026 and arrhythmia on October 8, 2026.

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