# iCelsius

> Smartphone-connected digital thermometer app for temperature sensing and logging. (iPhone/iPad app by Aginova Sarl.)

- Source: https://appshunter.io/ios/app/icelsius/id434212879 (this page in markdown: same URL + `.md`)
- Developer: [Aginova Sarl](https://appshunter.io/developer/434212882)
- Category: Utilities, Education
- Price: Free
- Rating: 4.20/5 from 139 App Store ratings · 54 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 41 MB
- Languages: American English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek and 21 more
- Released: 2011-05-02
- Data updated: 2026-08-18
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/icelsius/id434212879/reviews.md

## What is iCelsius?

Extend your Smartphone, Sense the World. The iCelsius is a temperature probe that turns the iPhone, iPad or iPod touch into a digital thermometer.

IMPORTANT - Requires separate hardware available from http://www.icelsius.com to operate. The app can work in demo mode if no probe is connected.

Compatible with wired and wireless (Wi-Fi) iCelsius probes!

The current app downloaded from the App store will read temperature, create graphs and set up alerts.

Please visit our website www.icelsius.com for more information!

A stainless steel tip makes it possible to measure liquid temperatures such as baby formula, cooking ingredients, wine, tea, household appliances and hundreds of other applications. 

Can also be used in school or for teaching science, for equipment calibration, food quality control, cold chain control.

The application is constantly improved based on user feedback.

FEATURES

• Live Display – shows useful temperature data in one shot
• Graphs – with pan and zoom touch support
• Alarms – Generate alarms when temperature goes outside a configurable (lower and/or upper) limit.
• Snapshot Record – Ability to record a single reading, along with title, picture and note.
• Continuous Record – Ability to continuously record readings as well as to add notes, take a picture and drop a pin on the graph.
• History – Access all your previous records.
• Recipes – For cooking and barbecue, choose preset recipe or create your own.

Find more probes & wireless measurement devices on our product website www.icelsius.com and company website website www.aginova.com.

## Key features

- Live temperature display
- Temperature graphing with pan/zoom
- Configurable temperature alarms
- Snapshot and continuous recording
- Recipe presets for cooking
- History of recorded readings

## What do users think of iCelsius?

Overall sentiment: negative

**Pros**

- 👍 Accurate temperature readings
- 👍 Handy for monitoring
- 👍 Good for remote monitoring
- 👍 Works well for specific uses (e.g., cigars, BBQ)
- 👍 Good UI and graphing (when it works)
- 👍 Fast response to temperature changes
- 👍 Customer support praised (in some cases)
- 👍 App is improving with updates

**Cons**

- 🐛 Frequent crashes
- 🐛 Connectivity issues (Wi-Fi, Bluetooth)
- 🐛 Unreliable remote sensing
- 🐛 Inconsistent readings/inaccurate
- 🐛 Hardware failures (probes dying)
- 🐛 Poor battery life/power issues
- 🐛 App not supported on newer iOS versions
- 🐛 Difficult setup process
- 🐛 Lack of support/unresponsive company
- 🐛 Expensive for unreliable product
- 🐛 Software bugs and glitches
- 🐛 Data loss when switching apps/device sleeps

**Commonly reported bugs**

- App crashes on startup
- App crashes when tapping graphs
- Temperature readings are incorrect/flashing
- Live view display is messed up
- App crashes when phone locks or switches apps
- Connectivity issues (Wi-Fi, Bluetooth)
- Unit not recognized when connected directly
- App crashes on iPhone X
- App crashes on iPad and iPhone
- App crashes repeatedly after latest update
- Device becomes inoperable after update
- Pop-up to download newer version persists
- Probes show infinity or out of range readings
- Wi-Fi connection drops when iPad goes to sleep
- Dual probe app has only one set of alarm points
- App freezes when looking for Wi-Fi
- Unit not supported by iOS device error
- Wire leading to probe not ovenproof
- Recipe function only has high range for one probe
- Degrees C vs F display issues
- Graph display substandard
- App doesn't update temperature when not running
- App doesn't track temperature prior to current session after restart
- Unit never connects to home wireless network
- Temperature gauge no longer reports decimal values
- Recent update makes app useless
- Cannot tell if unit is charged
- Sensor inaccurate out of the box
- Sensor stopped working after a week or two
- App shows wrong temperatures in demo mode
- Graph zoom is useless (cannot zoom out to longer time scales)
- Cannot zoom temp scale without zooming time scale
- App doesn't run under iOS 7

**Most requested features**

- Fix crashing issues
- Improve Wi-Fi and Bluetooth connectivity
- Ensure compatibility with newer iOS versions
- Improve remote monitoring reliability
- Fix data loss when switching apps
- Add dual alarm points for dual probes
- Improve recipe function (high range for one probe)
- Fix Celsius/Fahrenheit display issues
- Improve graph display (zoom, time span, temp span)
- Allow background notifications/alarms
- Add ability to call/text on alarm
- Make probes ovenproof
- Improve probe durability/lifespan
- Allow power supply via mini USB
- Separate time and date columns in CSV export
- Allow zooming on temperature scale in graphs
- Make app work without hardware (demo mode improvement)
- Improve documentation for non-techies

## Recent user reviews (10 of 54)

All indexed reviews: https://appshunter.io/ios/app/icelsius/id434212879/reviews.md

### 5/5 — Accurate and very handy

*2023-02-24, version 2.3*

My iCelsius has been dependable for 3 years so far. 
Love the interface!

### 5/5 — Beso a el programmer

*2022-04-02, version 2.2.21*

I would give this programmer a kiss because this programmer seems to be like my soulmate, the same brain as mine, please, he is the only programmer like he is supposed to, Develop applications to measure temperature like he is supposed to, without any kind of decoration, like a band, that ridiculousness of to be buying a device with DriversFor the only Driver it is all a matter of programming I would like to know this programmer as it is the personality it is the characteristic ah ah Facebook is even better because it does things as it is supposed to And if it is like that I would make friends run to make applications like MandaThe computational paradigms

### 1/5 — Cannot be used for accurate temperature readings

*2021-09-13, version 2.2.18*

I do not have a thermometer with me and google suggested to use this app, you can toggle from Celsius to Fahrenheit for easier understanding. It clocked me at 88° Fahrenheit. Obviously not accurate in the slightest. Do not recommend.

### 1/5 — Not supported

*2020-10-11, version 2.2.18*

No longer supported for ios14, last update 1 year ago. Does not connect via Wi-Fi and does not recognize when direct connected. WALK AWAY!

### 1/5 — App crashes on iphone x

*2019-09-14, version 2.2.18*

Keeps crashing. Please fix it

### 5/5 — Nice app for Bluetooth and WiFi

*2019-06-03, version 2.2.17*

I like this better than the other ones

### 1/5 — Constantly crashes

*2018-09-25, version 2.2.15*

Can’t open the app, constantly crashes on iPad and iPhone!

### 5/5 — Awesome for monitoring temperature

*2017-09-26, version 2.2.13*

I designed a system to monitor the temperature inside my truck because we take our dogs everywhere with us. I can set an alarm threshold and get back to the truck if there is a problem with the air conditioner. Thanks.

### 1/5 — Unreliable remote sensing

*2017-04-05, version 2.2.9*

I bought this to sense a temperature remotely. It is wifi connected to a business router with a fixed IP. The setup is a bit flaky. You must first use a smartphone and the iCelsius app to connect to the unit's own wifi SSID. When that us done you must load the internet router's password into the unit. Then you switch back your smartphone to the router. You also need a Google account, rather than use a port number on a fixed IP, like every other security device I know. 
The end result us that I frequently try to look remotely at a temperature and I get nothing after it works for a while. The sensing using a browser, via Google account, does not survive 24 hours before the supplied software loses the  sensor and displays 'no data'. 
The software supplied is idiosyncratic to say the least. It is anything but ergonomic.
The worst aspect of this system is the non-existent support. I have used the 'Contact Us' page on the supplied software and the messaging button on their Facebook page but have not been even acknowledged. 
The system is usable locally when a smartphone can talk directly to the unit but I give up on using the remote facility.

### 1/5 — 2.2.9 iPhone 5

*2017-03-24, version 2.2.9*

The most important item on the live view (current temp) is now messed up on version 2.2.9. Example if the temperature is 150.5 degs, the live view shows 1...5 

I use this app for a wood burning boiler output temperature. I check the temp regularly through the day and now must go to graph and wait a minute for the temperature to appear on the graph. I don't know how the failure of the most important item within the app wasn't caught before the update release.

## Frequently asked questions about iCelsius

### What does the iCelsius app do?

The iCelsius app turns your iPhone, iPad, or iPod touch into a digital thermometer when used with a separate iCelsius hardware probe. It allows you to read temperatures, create visual graphs of temperature changes, and set up custom alerts for specific temperature ranges.

### What are the key features of the iCelsius app?

Key features include a live display of temperature data, interactive graphs with pan and zoom capabilities, alarms that trigger when temperatures go outside set limits, and options for both snapshot and continuous recording of readings. You can also access a history of all your previous records and utilize recipe presets for cooking.

### Is the iCelsius app free to use?

The iCelsius app itself is free to download and use. However, it requires the purchase of separate iCelsius hardware probes to function. The app can be used in a demo mode if no probe is connected.

### What devices is the iCelsius app compatible with?

The app is compatible with iPhone, iPad, and iPod touch devices. It can work with both wired and wireless (Wi-Fi) iCelsius probes, offering flexibility in how you connect and use the temperature sensing hardware.

### What are some common uses for the iCelsius app and probe?

The app and probe are versatile for measuring liquid temperatures like baby formula, cooking ingredients, wine, and tea. They are also useful for science education, equipment calibration, food quality control, and cold chain monitoring.

## Version history (last 5 releases)

### 2.3 — 2022-11-16

Fixes for bluetooth mode

### 2.2.21 — 2021-12-10

Fixes for EZ probes

### 2.2.20 — 2021-11-15

- Fixes for background mode

### 2.2.19 — 2021-09-30

- Fixes for Remote Mode

### 2.2.18 — 2019-07-15

- Fixes for iOS 12
- Remote Mode issue fixed

## Apps similar to iCelsius

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All apps by Aginova Sarl: https://appshunter.io/developer/434212882

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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 2026-08-18.*