# ECG+ | Your Watch ECG Reader vs KardiaRx

ECG+ | Your Watch ECG Reader and KardiaRx both sit at 4.5 stars, but that hides the real split: 64% of ECG+ | Your Watch ECG Reader's written reviews are positive against 0% of KardiaRx's. ECG+ | Your Watch ECG Reader also leads on update cadence (every 9 days vs every 3 months) and ratings volume (2.6K vs 21). KardiaRx's advantage is in-app purchases (none vs 5) and iOS requirement (15.8 vs 18.0). On price, rating, ads and device support 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. KardiaRx asks for nothing beyond the download.

ECG+ | Your Watch ECG Reader holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: ECG+ | Your Watch ECG Reader has 2.6K ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 64% of ECG+ | Your Watch ECG Reader's written reviews are positive against 0% of KardiaRx's.

ECG+ | Your Watch ECG Reader ships an update every 9 days, KardiaRx every 3 months. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | ECG+ | Your Watch ECG Reader | KardiaRx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.6K ratings)](https://appshunter.io/ios/app/ecg-plus-your-watch-ecg-reader/id1567047859/reviews)** | [4.3 (21 ratings)](https://appshunter.io/ios/app/kardiarx/id1571374454/reviews) |
| Number of ratings | **2.6K** | 21 |
| Positive reviews | **64.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#25** | — |
| Size | 61 MB | 143 MB |
| Requires iOS | 18.0 | **15.8** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Heartworks Pty Ltd](https://appshunter.io/developer/1783326256) | [AliveCor, Inc.](https://appshunter.io/developer/546535893) |

## What reviewers say

### ECG+ | Your Watch ECG Reader

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

**Currently charting:** #25 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


### KardiaRx

[App page](https://appshunter.io/ios/app/kardiarx/id1571374454)

This app works with an FDA-cleared EKG device to provide advanced cardiac monitoring. It allows users to capture medical-grade EKGs anytime, anywhere, detecting common arrhythmias in 30 seconds. Track your heart health data with accuracy trusted by doctors.

**Highlights:** Advanced cardiac monitoring, Works with KardiaMobile 6L EKG devices, Detects common arrhythmias, Medical-grade EKG capture, No patches, wires, or gels required, Track heart health data

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

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

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

### Is KardiaRx free?

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

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

ECG+ | Your Watch ECG Reader is rated higher. ECG+ | Your Watch ECG Reader averages 4.5 out of 5 from 2.6K ratings, while KardiaRx averages 4.3 from 21 ratings.

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

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

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

ECG+ | Your Watch ECG Reader ships an update every 9 days, and KardiaRx every 3 months. Most recently, ECG+ | Your Watch ECG Reader was updated on November 11, 2026 and KardiaRx on November 7, 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.*