# ECG Simulator vs arrhythmia

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.

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.

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.

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.

## The numbers

| Metric | ECG Simulator | arrhythmia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/ecg-simulator/id984350131/reviews) | **[4.2 (111 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews)** |
| Number of ratings | 2 | **111** |
| Positive reviews | — | 43.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 3 weeks** |
| Monetization | **Free** | Subscription |
| Size | 10 MB | 159 MB |
| Requires iOS | **7.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 12+ | 17+ |
| Developer | [Vales & Hills BioMedical Tech. Ltd](https://appshunter.io/developer/472601851) | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) |

## What reviewers say

### ECG Simulator

[App page](https://appshunter.io/ios/app/ecg-simulator/id984350131)

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:** macOS Compatibility

**In-app purchases:** none


### arrhythmia

[App page](https://appshunter.io/ios/app/arrhythmia/id996560473)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |
| Unlock All Rhythms (One-time Purchase) | $4.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*