# Celsium — Wearable temperature monitor

> Wearable body temperature sensor companion app with historical data and alerts. (iPhone/iPad app by SMARTR Health Limited.)

- Source: https://appshunter.io/ios/app/celsium/id1487138084 (this page in markdown: same URL + `.md`)
- Developer: [SMARTR Health Limited](https://appshunter.io/developer/1487138083)
- Category: Health & Fitness
- Price: Free
- Age rating: 12+
- Requires: iOS 10.0 · 108 MB
- Released: 2020-10-06
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/celsium/id1487138084/reviews.md

## What is Celsium?

Celsium is a temperature monitoring app designed to work with the Celsium wearable body temperature sensor (thermometer). To measure temperature with the application you will need to purchase the Celsium sensor.
 
The app offers the following features:

Body temperature monitoring
- Worn under the arm, our sensor can be connected to the iOS device via Bluetooth LE.
- The sensor sends a body temperature reading to the app every 4s. You can see this on the readout dial.
- You can see charts of how your temperature changes over time in the mini-graph and the graph page.

Historical data
- If you are wearing the sensor while the app is not running, it will store up to 20 days of historical temperature readings. Next time you connect to the app, these readings will be uploaded.

Temperature limit warnings
- You can set upper and lower temperature limits and receive an audible warning when your temperature goes outside this range.

Medicines
- You can record when you take over-the-counter medication and see how it fits in with changes in your temperature.
- You can add reminders to take medication in the future.

Cloud synchronisation
- All your data is stored in the cloud, so you can use the app on a second device to monitor their temperature remotely.

## Key features

- Continuous body temperature monitoring
- Real-time Bluetooth LE sensor connection
- Historical temperature data storage (up to 20 days)
- Customizable temperature limit warnings
- Medication logging and reminders
- Cloud synchronization for remote monitoring

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/celsium/id1487138084/reviews.md

### 1/5 — Perhaps a scam

*2024-01-20*

Ordered over 2 weeks ago. No indication it has been shipped. Sent 3 follow up messages. Nothing. Either a brutally run business or a scam.

## Frequently asked questions about Celsium

### Does Celsium require a separate device to function?

Yes, Celsium is designed to work exclusively with the Celsium wearable body temperature sensor. This sensor needs to be purchased separately to enable temperature measurement with the application.

### How often does Celsium update temperature readings?

The Celsium wearable sensor sends a body temperature reading to the app every 4 seconds. These readings are displayed on the readout dial for continuous monitoring.

### Can Celsium store past temperature data?

Yes, Celsium can store up to 20 days of historical temperature readings if the sensor is worn while the app is not running. These readings are uploaded the next time the app connects.

### Does Celsium offer alerts for high or low temperatures?

Yes, Celsium allows you to set custom upper and lower temperature limits. You will receive an audible warning if your body temperature goes outside of these set ranges.

### Can I track my medication with Celsium?

Yes, you can record when you take over-the-counter medication within Celsium. The app can then show how this aligns with your temperature changes and you can set future medication reminders.

### Is Celsium compatible with other devices?

Celsium is compatible with iPhone, iPad, and iPod devices. Cloud synchronization allows you to use the app on a second device to monitor temperature remotely.

### What is the age rating for Celsium?

Celsium has an age rating of 12+. This indicates it is suitable for users aged 12 and older.

### Does Celsium have ads?

No, Celsium does not contain advertisements. The app is free to download and use without any ad interruptions.

## Version history (last 3 releases)

### 1.0.2 — 2021-05-17

Minor bug fixes only.

### 1.0.1 — 2020-10-06

Minor bug fixes

### 1.0.0 — 2020-09-17

No release notes.

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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.*