# Masimo Radius T° — Continuous Thermometer

> Wearable thermometer companion for continuous fever monitoring and alerts. (iPhone/iPad app by Masimo Corporation.)

- Source: https://appshunter.io/ios/app/masimo-radius-t/id1537213321 (this page in markdown: same URL + `.md`)
- Developer: [Masimo Corporation](https://appshunter.io/developer/568979269)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 4.80/5 from 19 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 102 MB
- Languages: American English, Arabic
- Released: 2020-11-06
- Data updated: 2026-08-16
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/masimo-radius-t/id1537213321/reviews.md

## What is Masimo Radius T°?

The Masimo Radius T° app does not provide medical or healthcare diagnoses, advice, or services, and is not a substitute for medical care.

Now you can easily keep an eye on a fever, so you don’t miss something important. Radius T°™ is a wearable and disposable thermometer (sold separately) that sends round-the-clock temperature measurements and notifications directly to your phone.

Time to upgrade your thermometer and switch to the advantages of continuous temperature tracking:  
KEEP AN EYE ON A FEVER - CONTINUOUSLY AND HASSLE-FREE

*** Requires purchase of Radius T° Continuous Thermometer Sensors, sold separately ***

CONTINUOUS MEASUREMENTS
Hassle-free temperature measurements, 24/7 for up to 8 days. Keep a constant eye on their fever, without even waking them.

HIGH TEMPERATURE NOTIFICATIONS
Automatically sends readings to your mobile phone and notifies you if temperature is high.

TEMPERATURE TRENDING
Continually see if temperature is trending up or down, so you can see how the fever is progressing.

With the Masimo Radius T° mobile app, it's easy to keep an eye on a fever:
- SNAPSHOT - See if temperature is in or out of range at a quick glance.
- TRENDS - Easily see which way temperature is trending and how long it's been high, so you can keep an eye on progress.
- NOTIFICATIONS - Automatically notifies you if the temperature is high, so you know when additional action may be needed.

## Key features

- Continuous 24/7 temperature measurement
- High temperature notifications
- Temperature trending visualization
- Snapshot view of temperature range
- Wearable and disposable sensor compatibility

## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/masimo-radius-t/id1537213321/reviews.md

### 2/5 — Reports don’t work

*2025-01-21*

Really cool technology, but when I ask it to generate a report, it loads for a long time then crashes. I’ve tried it for a weeklong period and a daylong period, with and without notes. These reports just won’t generate.

### 5/5 — Very easy to use.

*2023-04-08*

Very useful when you’re sick. 

Quickly and continuously check your temperature. 

Great for checking in on loved one without needing to disrupt their sleep. 

Amazing to be able to see yourself get better by looking at the trended data.

### 5/5 — Easy to use

*2023-04-08*

No need to wake up in the middle of the night to check on the kid’s temperature. It’s all recorded in the app and I can set notification when the fever gets bad. I wish I knew about this app during COVID-19.

### 5/5 — Continuous Temperature Monitoring

*2023-04-05*

Allows me to manage medications accordingly based on rise or fall of temperature. Shower proof also!

### 5/5 — Confidence & well-being

*2023-04-05*

Provides real time data from a trusted source and it’s in the palm of my hand.  Truly a stroke of innovation for monitoring my loved ones

### 5/5 — Oncology

*2023-04-05*

My best friend has cancer and I have kids. How incredible to have hospital grade technology that can continuously monitor your temperature while you are recovering, fighting an infection or track your love one’s condition while they are sleeping. This is so impactful!!!!! Continuous monitoring in the comfort of my own home for me and my family.

### 5/5 — Great patch

*2023-04-05*

This sensor was hassle free. The App was easy to use and gave me piece of mind.

### 5/5 — Love having Accurate temperature

*2023-04-05*

Love having the ability to continuously monitoring the temperature of my kids when they get sick. It’s an app I trust to keep me informed of their condition

### 5/5 — Brings Hospital monitoring to home.

*2023-04-05*

I have used this numerous times to monitor my daughters during RSV season. It has kept us out of the hospital twice now. Easy to use and connect to my phone for continuous monitoring.

### 5/5 — Well engineered

*2023-04-03*

Well engineered

## Frequently asked questions about Masimo Radius T°

### Does Masimo Radius T° require a separate device?

Yes, the Masimo Radius T° app requires the purchase of Radius T° Continuous Thermometer Sensors, which are sold separately. The app itself is free to download and use with the compatible hardware.

### How long does the Masimo Radius T° thermometer last?

The Radius T° wearable and disposable thermometer sensors are designed to provide continuous temperature measurements for up to 8 days. This allows for hassle-free, round-the-clock monitoring without frequent changes.

### What kind of notifications does Masimo Radius T° send?

The app automatically sends readings to your mobile phone and notifies you if the temperature is high. This ensures you are alerted promptly when additional action may be needed.

### Can I see how a fever is progressing with Masimo Radius T°?

Yes, the app offers temperature trending features. You can continually see if the temperature is trending up or down, helping you monitor the fever's progression over time.

### Is Masimo Radius T° suitable for infants?

The app is rated for ages 4+ and works with a wearable thermometer, which can be beneficial for monitoring infants and children without disturbing their sleep. The continuous monitoring helps keep an eye on fevers without constant waking.

### What devices does Masimo Radius T° support?

The Masimo Radius T° app is supported on iPhones and iPods. It is designed to work with these iOS devices to receive temperature data from the wearable sensors.

### How often is Masimo Radius T° updated?

The latest version of Masimo Radius T° is 1.1.0, which was last updated on September 19, 2022. Updates typically include bug fixes and performance improvements to ensure reliable operation.

### Does Masimo Radius T° have ads?

No, the Masimo Radius T° app does not contain advertisements. It is a free application designed to work with the purchased hardware, providing a seamless user experience without interruptions.

## Version history (last 2 releases)

### 1.1.0 — 2022-09-19

- Minor enhancements and bug fixes.

### 1.0.0 — 2020-11-07

No release notes.

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| --- | --- | --- | --- |
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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)

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

## Related topics

[masimo](https://appshunter.io/ios/topics/masimo)

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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 2026-08-16.*