# EMAY Bluetooth Pulse Oximeter vs Heart Works

The clearest difference is ratings volume: EMAY Bluetooth Pulse Oximeter at 33 against Heart Works's 3. EMAY Bluetooth Pulse Oximeter also leads on iOS requirement (13.0 vs 15.6). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.6 for EMAY Bluetooth Pulse Oximeter against 3.7 for Heart Works. That said, the two scores are not equally well evidenced: EMAY Bluetooth Pulse Oximeter has 33 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 43% of EMAY Bluetooth Pulse Oximeter's written reviews are positive against 50% of Heart Works's.

EMAY Bluetooth Pulse Oximeter ships an update every 6 weeks, Heart Works every 3 weeks. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | EMAY Bluetooth Pulse Oximeter | Heart Works |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (33 ratings)](https://appshunter.io/ios/app/emay-bluetooth-pulse-oximeter/id1478488516/reviews) | **[3.7 (3 ratings)](https://appshunter.io/ios/app/heart-works-phaware/id6572293049/reviews)** |
| Number of ratings | **33** | 3 |
| Positive reviews | 42.9% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 21 MB | 56 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Emay (HK) Limited](https://appshunter.io/developer/1259126707) | [phaware global association](https://appshunter.io/developer/1027612096) |

## What reviewers say

### EMAY Bluetooth Pulse Oximeter

[App page](https://appshunter.io/ios/app/emay-bluetooth-pulse-oximeter/id1478488516)

This app connects to a Bluetooth pulse oximeter to transfer SpO2 and heart rate data to your smartphone. Review historical readings, generate professional reports, and share them easily. It also integrates with Apple Health for comprehensive health tracking.

**Highlights:** Bluetooth data transfer, SpO2 and heart rate review, Historical data tracking, Professional report generation, Shareable reports, Apple Health integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Heart Works

[App page](https://appshunter.io/ios/app/heart-works-phaware/id6572293049)

This app helps medical researchers evaluate cardiovascular health in patients with Pulmonary Arterial Hypertension. It offers real-time health tracking, quality-of-life surveys, and 6-minute walk tests for patients to monitor their progress. The app also provides access to educational content and a podcast.

**Highlights:** Six-Minute Walk Test (6MWT), Real-time health data tracking, Quality-of-life surveys, Available on phone and watch, Access to 'phaware® podcast', Tailored education

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

**In-app purchases:** none


## Frequently asked questions

### Is EMAY Bluetooth Pulse Oximeter free?

EMAY Bluetooth Pulse Oximeter is free to download, with no in-app purchases.

### Is Heart Works free?

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

### Which has better reviews, EMAY Bluetooth Pulse Oximeter or Heart Works?

Heart Works is rated higher. EMAY Bluetooth Pulse Oximeter averages 3.6 out of 5 from 33 ratings, while Heart Works averages 3.7 from 3 ratings.

### Do EMAY Bluetooth Pulse Oximeter or Heart Works have ads?

Neither EMAY Bluetooth Pulse Oximeter nor Heart Works shows ads.

### Which is updated more often, EMAY Bluetooth Pulse Oximeter or Heart Works?

EMAY Bluetooth Pulse Oximeter ships an update every 6 weeks, and Heart Works every 3 weeks. Most recently, EMAY Bluetooth Pulse Oximeter was updated on November 3, 2026 and Heart Works on November 8, 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.*