# iThermonitor vs ECG+ | Your Watch ECG Reader

The clearest difference is review sentiment: ECG+ | Your Watch ECG Reader at 64% against iThermonitor's 15%. ECG+ | Your Watch ECG Reader also leads on rating (4.5 vs 2.7) and update cadence (every 10 days vs every 2 months). iThermonitor's advantage is in-app purchases (none vs 5) and iOS requirement (10.0 vs 18.0). On price, 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. iThermonitor asks for nothing beyond the download.

ECG+ | Your Watch ECG Reader holds the better App Store score, 4.5 against 2.7. That said, the two scores are not equally well evidenced: ECG+ | Your Watch ECG Reader has 2.5K ratings behind it against 310, so its average is the more settled of the two. Written reviews point the same way: 15% of iThermonitor's written reviews are positive against 64% of ECG+ | Your Watch ECG Reader's.

iThermonitor ships an update every 2 months, ECG+ | Your Watch ECG Reader every 10 days. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | iThermonitor | ECG+ | Your Watch ECG Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (310 ratings)](https://appshunter.io/ios/app/ithermonitor/id696637855/reviews) | **[4.5 (2.5K ratings)](https://appshunter.io/ios/app/ecg-plus-your-watch-ecg-reader/id1567047859/reviews)** |
| Number of ratings | 310 | **2.5K** |
| Positive reviews | 15.2% of reviews | **64.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | #156 | **#30** |
| Size | 53 MB | 77 MB |
| Requires iOS | **10.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 17+ |
| Developer | [Raiing Medical Company](https://appshunter.io/developer/543439703) | [Heartworks Pty Ltd](https://appshunter.io/developer/1783326256) |

## What reviewers say

### iThermonitor

[App page](https://appshunter.io/ios/app/ithermonitor/id696637855)

**Currently charting:** #156 Top Free · Medical (US App Store)

Continuously monitor your child's temperature with real-time data collection and analysis. Receive high temperature alerts and access expert fever management information. Track temperature trends and sync data with your health app for comprehensive care.

**Highlights:** 24/7 temperature monitoring, Real-time high temperature alerts, Temperature trend charting, Professional data analysis, Fever management information, Multi-child support, Health app integration

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

**In-app purchases:** none

**What reviewers like**

- ✅ Accurate temperature readings when working properly
- 🛡️ Effective fever monitoring without disturbing sleep
- 📱 Remote monitoring capability (when functioning)
- 🔔 Customizable temperature alerts and notifications
- ⏱️ Long-term reliability for some users (5+ years)

**What reviewers complain about**

- ❌ Requires external hardware device not clearly disclosed
- 🔗 Broken purchase links and unavailable sensors
- 📉 Product appears discontinued or abandoned
- 🚫 Misleading app store description and marketing
- 🔌 Requires proximity to device (5-10 feet range)

**Reported bugs**

- App crashes immediately after login
- Cannot enter birthdate in profile setup
- Remote mirroring functionality broken after updates
- Device connection wheel spins indefinitely
- Password reset feature non-functional

**Requested features**

- Apple Watch native integration and complications
- Cloud synchronization and multi-device mirroring
- Expanded temperature range settings (below 95°F)
- Selective alert controls (high/low temperature separately)
- Data export in text/CSV format instead of images


### ECG+ | Your Watch ECG Reader

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

**Currently charting:** #30 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 iThermonitor free?

iThermonitor 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, iThermonitor or ECG+ | Your Watch ECG Reader?

ECG+ | Your Watch ECG Reader is rated higher. iThermonitor averages 2.7 out of 5 from 310 ratings, while ECG+ | Your Watch ECG Reader averages 4.5 from 2.5K ratings.

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

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

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

iThermonitor ships an update every 2 months, and ECG+ | Your Watch ECG Reader every 10 days. Most recently, iThermonitor was updated on October 13, 2026 and ECG+ | Your Watch ECG Reader on October 14, 2026.

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

iThermonitor currently peaks at #156 in the App Store charts, and ECG+ | Your Watch ECG Reader at #30. 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.*