# ecg app for watch vs Muse Otter

The clearest difference is update cadence: Muse Otter at every 4 days against ecg app for watch's every 2 weeks. Muse Otter also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. ecg app for watch sells 3 in-app purchases, starting at $5.99 per 7 days and Muse Otter sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ecg app for watch ships an update every 2 weeks, Muse Otter every 4 days. The most recent releases landed on October 31, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | ecg app for watch | Muse Otter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/ecg-app-for-watch-pulsebyte/id6757330931/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Subscription | — |
| Size | 16 MB | 98 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Can Berk Hayretdag](https://appshunter.io/developer/1629754201) | [Youcef El Kamel](https://appshunter.io/developer/1202715228) |

## What reviewers say

### ecg app for watch

[App page](https://appshunter.io/ios/app/ecg-app-for-watch-pulsebyte/id6757330931)

Track your heart rate and understand your cardiovascular health using your phone's camera and Apple Health data. Estimate heart rate variability and view health trends over time without needing extra devices. This app is not intended for medical use.

**Highlights:** Measure heart rate with phone camera, Estimate HRV, View health trends, Integrates with Apple Health, No extra devices required

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $5.99 | per 7 days |
| Monthly Pro | $9.99 | per month |
| Pro Annual | $39.99 | per year |


### Muse Otter

[App page](https://appshunter.io/ios/app/muse-otter-weekly-reflection/id6758237494)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Muse Otter Pro - Monthly | $9.99 | per month |
| Muse Otter Pro - Annuel | $16.99 | per year |
| Muse Otter Pro - Annuel | $16.99 | per year |
| Museotter Pro - Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is ecg app for watch free?

ecg app for watch is free to download, with in-app purchases available.

### Is Muse Otter free?

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

### Do ecg app for watch or Muse Otter have ads?

Neither ecg app for watch nor Muse Otter shows ads.

### Which is updated more often, ecg app for watch or Muse Otter?

ecg app for watch ships an update every 2 weeks, and Muse Otter every 4 days. Most recently, ecg app for watch was updated on October 31, 2026 and Muse Otter on November 9, 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.*