# Masimo Halo

> Opioid overdose and oxygen monitoring alert system with escalating notifications. (iPhone/iPad app by Masimo Corporation.)

- Source: https://appshunter.io/ios/app/masimo-halo/id1570941911 (this page in markdown: same URL + `.md`)
- Developer: [Masimo Corporation](https://appshunter.io/developer/568979269)
- Category: Health & Fitness
- Price: Free
- Rating: 2.50/5 from 2 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 175 MB
- Languages: Arabic, Dutch, English, French, German, Italian, Spanish, Swedish
- Released: 2021-08-30
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/masimo-halo/id1570941911/reviews.md

## What is Masimo Halo?

The Masimo Halo App works with two different monitoring systems: Opioid Halo and Masimo SafetyNet Alert. 

In the United States, Masimo has launched Opioid Halo, the first and only FDA-Authorized device to alert you in the event of an overdose. Opioid Halo is an opioid overdose prevention and alert system*, and provides real-time monitoring to identify the risk of accidental overdose – slowed or stopped breathing. The system sends alerts to your loved ones and designated emergency contacts, followed by a wellness call that may lead to EMS being dispatched. Opioid Halo includes an advanced pattern recognition algorithm to continuously monitor the risk of overdose and send escalating alerts when help is needed.  

Know when to take action with Opioid Halo: 
•	Alert Level 1: Caution – Notifies via Masimo Halo app and Home Medical Hub
•	Alert Level 2: Warning – Notifies you and other designated contacts via text message
•	Alert Level 3: Emergency – Triggers an automated wellness call that may lead to EMS being dispatch

In Europe, Canada and Saudi Arabia, Masimo SafetyNet Alert is an oxygen monitoring and alert system that continuously monitors physiological data – even during sleep – to identify respiratory depression. The system sends escalating alerts to you and your loved ones if blood oxygen levels decline, raising awareness when help is needed.

Know when to take action with Masimo SafetyNet Alert: 
•	Alert Level 1: Caution – Notifies via Masimo Halo app and Home Medical Hub
•	Alert Level 2: Warning – Notifies you and sends automatic texts to designated contacts
•	Alert Level 3: Emergency – Notifies you again and sends automatic texts to designated contacts 

***Requires purchase of Opioid Halo in the US and Masimo SafetyNet Alert OUS, sold separately***

Opioid Halo and Masimo SafetyNet Alert are powered by clinically proven Masimo SET® – the same advanced signal processing technology trusted by doctors to monitor more than 200 million patients each year.

*Opioid Halo continuously monitors certain physiological parameters that are indicative of opioid-induced respiratory depression – a sign of opioid overdose – in order to alert users and their emergency contacts so that action can be taken to avoid adverse consequences of an overdose.

## Key features

- Opioid overdose detection and alerts
- Blood oxygen monitoring and alerts
- Real-time physiological data monitoring
- Escalating alert levels
- Notifications to designated contacts
- Potential EMS dispatch initiation

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/masimo-halo/id1570941911/reviews.md

### 1/5 — No O2 Saturation display

*2024-04-12*

I called Masimo customer service a few hours ago to seek help why the feature of SpO2 is none existent . They left out what this is all about. I am looking for another device option. It’s a health hazard that only a lawsuit can fix.

### 4/5 — What happened to the oxygen sensor

*2023-10-20*

I love this thing! It’s awesome and can be a legit life saver! But one thing; when I first downloaded the app the oxygen sensor was working perfectly, then 10 minutes later it disappeared and I haven’t seen it since. I’ve tried everything but for some reason it only shows perfusion index, no oxygen gauge or table… kinda biggie that’s needed for this thing. Especially for overdoses. Other than that I think the ideas and actually product is amazing and can really save lives. There brand new so I expect some bugs I guess.

### 1/5 — Does not push alarm/notifications to your phone

*2023-04-05*

Set the device up today and it was not sending notifications to my phone, and doesn’t play any audible alarms from the hub or the app.  Customer service did not know how to fix it either, and went to confer with a colleague but haven’t gotten back to me yet.

### 3/5 — A bit more expected from Masimo

*2022-01-03*

Generally good app which i hope will improve. I do miss the trend. For a 10 hrs recording only the minimum, average and maximum values are shown. A trend view should be added so users can see when the desaturation happens. 
Bigger problem is the loss of audio connection with AirPods3. Every time i start using the app, my Airpods stops working and audio connection cannot be restored until the iphone is restarted. Which is quite annoying. It is a brand new device so i hope this will improve.

## Frequently asked questions about Masimo Halo

### What is Masimo Halo used for?

Masimo Halo is used with the Opioid Halo system in the US for opioid overdose prevention and alerts, and with the Masimo SafetyNet Alert system in other regions for oxygen monitoring and alerts. Both systems aim to notify users and contacts of critical physiological changes.

### Does Masimo Halo require a separate device?

Yes, Masimo Halo requires the purchase of either the Opioid Halo device in the US or the Masimo SafetyNet Alert device outside the US. The app itself functions as the interface for these monitoring systems.

### How does Masimo Halo alert users and contacts?

Masimo Halo provides escalating alerts. Level 1 is a caution notification, Level 2 is a warning via text message to designated contacts, and Level 3 is an emergency alert that may trigger an automated wellness call and EMS dispatch.

### What technology powers Masimo Halo?

Masimo Halo is powered by Masimo SET® signal processing technology, which is clinically proven and trusted by doctors to monitor over 200 million patients annually. This technology is designed for accurate physiological monitoring.

### What is the rating for Masimo Halo?

Masimo Halo has a rating of 2.5 stars from 2 ratings. This indicates a mixed user reception based on the limited feedback available.

### On what devices can Masimo Halo be used?

Masimo Halo is supported on iPhone and iPod devices. It is designed to work with Apple's mobile operating system.

### When was Masimo Halo last updated?

The latest version of Masimo Halo, 1.1.6, was last updated on June 15, 2024. This suggests the app receives regular maintenance and updates.

### Is Masimo Halo suitable for all ages?

Masimo Halo has an age rating of 4+, meaning it is considered appropriate for children aged 4 and older. However, its primary use case is for health monitoring in at-risk individuals.

## Version history (last 5 releases)

### 1.1.6 — 2024-06-15

- Minor enhancements and bug fixes.

### 1.1.5 — 2024-04-17

- Minor enhancements and bug fixes.

### 1.1.0 — 2023-06-05

Update alert! We are excited to announce that we have changed our Masimo SafetyNet Alert app to Masimo Halo to better reflect our monitoring and alert system portfolio. Along with the name change, we have also updated our app icon to match our new brand identity. Don’t worry, though – the app’s functionality remains unchanged.

### 1.0.75 — 2022-10-09

- Minor enhancements and bug fixes.

### 1.0.7 — 2022-04-27

- Updated User Interface
- Minor enhancements and bug fixes.

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## More apps by Masimo Corporation

- [Masimo Personal Health](https://appshunter.io/ios/app/masimo-personal-health/id568979246)
- [Masimo Professional Health](https://appshunter.io/ios/app/masimo-professional-health/id652418755)
- [Masimo U](https://appshunter.io/ios/app/masimo-u/id1454037352)
- [Masimo SafetyNet](https://appshunter.io/ios/app/masimo-safetynet/id1503637505)
- [Masimo Sleep](https://appshunter.io/ios/app/masimo-sleep/id1525041207)
- [Masimo Radius T°](https://appshunter.io/ios/app/masimo-radius-t/id1537213321)

All apps by Masimo Corporation: https://appshunter.io/developer/568979269

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*