# Kardia vs ECG+ | Your Watch ECG Reader

The clearest difference is in-app purchases: Kardia at none against ECG+ | Your Watch ECG Reader's 5. Kardia also leads on ratings volume (239K vs 2.6K) and rating (4.8 vs 4.5). ECG+ | Your Watch ECG Reader's advantage is update cadence (every 9 days vs monthly). On price, review sentiment, ads and chart position there is nothing between them.

Both are free to download. ECG+ | Your Watch ECG Reader sells 5 in-app purchases, starting at $9.99 per month. Kardia asks for nothing beyond the download.

Kardia holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Kardia has 239K ratings behind it against 2.6K, so its average is the more settled of the two. Written reviews split almost evenly too, at 65% and 64% positive.

Kardia ships an update monthly, ECG+ | Your Watch ECG Reader every 9 days. Both last shipped on November 7, 2026.

## The numbers

| Metric | Kardia | ECG+ | Your Watch ECG Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (239K ratings)](https://appshunter.io/ios/app/kardia/id579769143/reviews)** | [4.5 (2.6K ratings)](https://appshunter.io/ios/app/ecg-plus-your-watch-ecg-reader/id1567047859/reviews) |
| Number of ratings | **239K** | 2.6K |
| Positive reviews | **65.1% of reviews** | 64.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | #73 | **#31** |
| Size | 457 MB | 61 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 17+ |
| Developer | [AliveCor, Inc.](https://appshunter.io/developer/546535893) | [Heartworks Pty Ltd](https://appshunter.io/developer/1783326256) |

## What reviewers say

### Kardia

[App page](https://appshunter.io/ios/app/kardia/id579769143)

**Currently charting:** #73 Top Free · Medical (US App Store)

This app allows you to record medical-grade EKGs using compatible personal devices. It provides immediate analysis for common arrhythmias and enables sharing of heart data with your doctor for remote monitoring and health history tracking.

**Highlights:** Record medical-grade EKGs, Immediate EKG analysis, Share heart data with doctors, Track heart health history, Integrates with Apple Health, Remote heart condition monitoring

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

**In-app purchases:** none

**What reviewers like**

- 👍 Useful for monitoring heart health
- 🚀 Accurate and reliable device
- 📊 Helpful for providing evidence to doctors
- 🤖 Convenient and easy to use
- 💡 Allows remote monitoring of heart conditions

**What reviewers complain about**

- 🔒 Requires subscription to unlock advanced features
- 🔋 Battery life issues
- 🔌 Connectivity problems
- 🤔 Inconsistent or inaccurate readings
- 💰 Expensive device and subscription

**Reported bugs**

- App crashes or freezes
- Compatibility issues with newer devices
- Difficulty sending or saving ECG recordings

**Requested features**

- Integrate with Apple Health
- Add temperature tracking
- Improve data sharing and reporting
- Enhance user interface and experience


### ECG+ | Your Watch ECG Reader

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

**Currently charting:** #31 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, iPhone Duo 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 Kardia free?

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

### 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, Kardia or ECG+ | Your Watch ECG Reader?

Kardia is rated higher. Kardia averages 4.8 out of 5 from 239K ratings, while ECG+ | Your Watch ECG Reader averages 4.5 from 2.6K ratings.

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

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

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

Kardia ships an update monthly, and ECG+ | Your Watch ECG Reader every 9 days. Most recently, Kardia was updated on November 7, 2026 and ECG+ | Your Watch ECG Reader on November 7, 2026.

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

Kardia currently peaks at #73 in the App Store charts, and ECG+ | Your Watch ECG Reader at #31. 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.*