# arrhythmia vs ECG / EKG Explained Clearly

The clearest difference is monetization model: ECG / EKG Explained Clearly at free against arrhythmia's subscription. ECG / EKG Explained Clearly also leads on rating (4.7 vs 4.2) and iOS requirement (13.0 vs 17.6). arrhythmia's advantage is ratings volume (111 vs 6). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. arrhythmia sells 3 in-app purchases, starting at $2.99 per month and ECG / EKG Explained Clearly sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ECG / EKG Explained Clearly holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: arrhythmia has 111 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 44% of arrhythmia's written reviews are positive against 50% of ECG / EKG Explained Clearly's.

arrhythmia ships an update every 3 weeks, ECG / EKG Explained Clearly monthly. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | arrhythmia | ECG / EKG Explained Clearly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (111 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews) | **[4.7 (6 ratings)](https://appshunter.io/ios/app/ecg-ekg-explained-clearly/id1546551349/reviews)** |
| Number of ratings | **111** | 6 |
| Positive reviews | 43.9% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Subscription | **Free** |
| Best chart rank | #199 | **#198** |
| Size | 159 MB | 19 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) | [MedCram](https://appshunter.io/developer/1546551351) |

## What reviewers say

### arrhythmia

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

**Currently charting:** #199 Top Grossing · Medical (US App Store)

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 / EKG Explained Clearly

[App page](https://appshunter.io/ios/app/ecg-ekg-explained-clearly/id1546551349)

**Currently charting:** #198 Top Grossing · Medical (US App Store)

Learn a systematic approach to interpreting ECGs with concise videos, quizzes, and practice examples. This course is designed for healthcare professionals and students seeking to master cardiac physiology and EKG analysis.

**Highlights:** Systematic EKG interpretation approach, Understanding of heart's electrical activity, Illustrations of abnormal EKG findings, Hands-on practice with 11 blank EKGs, Reinforcement of cardiac physiology, 10 CME credits included

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full ECG Course Access | $109.99 | one-time |


## Frequently asked questions

### Is arrhythmia free?

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

### Is ECG / EKG Explained Clearly free?

ECG / EKG Explained Clearly is free to download, with in-app purchases available.

### Which has better reviews, arrhythmia or ECG / EKG Explained Clearly?

ECG / EKG Explained Clearly is rated higher. arrhythmia averages 4.2 out of 5 from 111 ratings, while ECG / EKG Explained Clearly averages 4.7 from 6 ratings.

### Do arrhythmia or ECG / EKG Explained Clearly have ads?

Neither arrhythmia nor ECG / EKG Explained Clearly shows ads.

### Which is updated more often, arrhythmia or ECG / EKG Explained Clearly?

arrhythmia ships an update every 3 weeks, and ECG / EKG Explained Clearly monthly. Most recently, arrhythmia was updated on October 17, 2026 and ECG / EKG Explained Clearly on October 12, 2026.

### Which is more popular, arrhythmia or ECG / EKG Explained Clearly?

arrhythmia currently peaks at #199 in the App Store charts, and ECG / EKG Explained Clearly at #198. Chart position reflects recent download velocity rather than total install base.

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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.*