# arrhythmia vs ECG QUIZ

The clearest difference is in-app purchases: ECG QUIZ at none against arrhythmia's 3. ECG QUIZ also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (9.0 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 QUIZ asks for nothing beyond the download.

arrhythmia ships an update every 3 weeks, ECG QUIZ every 2 days. The most recent releases landed on October 13, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | arrhythmia | ECG QUIZ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (111 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews)** | — |
| Number of ratings | **111** | — |
| Positive reviews | 43.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Subscription | — |
| Size | 159 MB | 8 MB |
| Requires iOS | 17.6 | **9.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) | [Chowgule Mediconsult Private Ltd](https://appshunter.io/developer/1010587906) |

## What reviewers say

### 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 |


### ECG QUIZ

[App page](https://appshunter.io/ios/app/ecg-quiz/id1483179842)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is arrhythmia free?

arrhythmia is free to download, with in-app purchases available.

### Is ECG QUIZ free?

ECG QUIZ is free to download, with no in-app purchases.

### Do arrhythmia or ECG QUIZ have ads?

Neither arrhythmia nor ECG QUIZ shows ads.

### Which is updated more often, arrhythmia or ECG QUIZ?

arrhythmia ships an update every 3 weeks, and ECG QUIZ every 2 days. Most recently, arrhythmia was updated on October 13, 2026 and ECG QUIZ on September 19, 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.*