# arrhythmia vs ECG+ | Your Watch ECG Reader

The clearest difference is monetization model: ECG+ | Your Watch ECG Reader at free with in-app purchases against arrhythmia's subscription. ECG+ | Your Watch ECG Reader also leads on rating (4.5 vs 4.2) and review sentiment (64% vs 45%). On price, ads, in-app purchases 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 and ECG+ | Your Watch ECG Reader sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ECG+ | Your Watch ECG Reader holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: ECG+ | Your Watch ECG Reader has 2.5K ratings behind it against 111, 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 64% of ECG+ | Your Watch ECG Reader's.

arrhythmia ships an update every 3 weeks, ECG+ | Your Watch ECG Reader every 10 days. The most recent releases landed on September 21, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | arrhythmia | ECG+ | Your Watch ECG Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (111 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews) | **[4.5 (2.5K ratings)](https://appshunter.io/ios/app/ecg-plus-your-watch-ecg-reader/id1567047859/reviews)** |
| Number of ratings | 111 | **2.5K** |
| Positive reviews | 45.0% of reviews | **64.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Best chart rank | #188 | **#35** |
| Size | 159 MB | 74 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 17+ |
| Developer | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) | [Heartworks Pty Ltd](https://appshunter.io/developer/1783326256) |

## What reviewers say

### arrhythmia

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

**Currently charting:** #188 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+ | Your Watch ECG Reader

[App page](https://appshunter.io/ios/app/ecg-plus-your-watch-ecg-reader/id1567047859)

**Currently charting:** #35 Top Grossing · Medical (US App Store)

This app enhances your Apple Watch ECG recordings by calculating PQRST to reveal your unique heartbeat signature. It also monitors Heart Rate Variability (HRV), an objective measure of physical readiness, and integrates with Apple Health.

**Highlights:** ECG recording analysis, Heart Rate Variability (HRV) tracking, PQRST calculation, Heartbeat signature analysis, Apple Health integration

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ECG+ PREMIUM | $9.99 | per month |
| ECG+ PREMIUM | $59.99 | per year |
| ECG+ PREMIUM Family | $79.99 | per year |
| ECG+ PREMIUM (Lifetime) | $199.99 | one-time |
| ECG+ PREMIUM Family (Lifetime) | $299.99 | one-time |

**What reviewers like**

- 🚀 Accurate ECG readings
- 👍 Helpful in monitoring heart health
- 📊 Provides useful insights and data
- 🤖 Impressive algorithms and analysis

**What reviewers complain about**

- 🐛 Inconsistent performance and reliability
- 💰 Expensive subscription model
- 🤔 Limited functionality in free version
- ⚠️ Compatibility issues with older devices

**Reported bugs**

- App not working or crashing
- Inability to set up or connect with Apple Watch
- Inaccurate readings or interpretations

**Requested features**

- Percentage of Long QT interval
- More customization options
- Ability to export data
- Improved user guidance and documentation


## Frequently asked questions

### Is arrhythmia free?

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

### Is ECG+ | Your Watch ECG Reader free?

ECG+ | Your Watch ECG Reader is free to download, with in-app purchases available.

### Which has better reviews, arrhythmia or ECG+ | Your Watch ECG Reader?

ECG+ | Your Watch ECG Reader is rated higher. arrhythmia averages 4.2 out of 5 from 111 ratings, while ECG+ | Your Watch ECG Reader averages 4.5 from 2.5K ratings.

### Do arrhythmia or ECG+ | Your Watch ECG Reader have ads?

Neither arrhythmia nor ECG+ | Your Watch ECG Reader shows ads.

### Which is updated more often, arrhythmia or ECG+ | Your Watch ECG Reader?

arrhythmia ships an update every 3 weeks, and ECG+ | Your Watch ECG Reader every 10 days. Most recently, arrhythmia was updated on September 21, 2026 and ECG+ | Your Watch ECG Reader on September 25, 2026.

### Which is more popular, arrhythmia or ECG+ | Your Watch ECG Reader?

arrhythmia currently peaks at #188 in the App Store charts, and ECG+ | Your Watch ECG Reader at #35. 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.*