Comparison

iCelsius vs ThermoWorks

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iCelsius

Transform your iPhone, iPad, or iPod touch into a digital thermometer with this app. It works with a separate hardware probe to measure temperatures of liquids and other substances, create graphs, and set alerts. Ideal for cooking, science education, and quality control.

Highlights
  • Live temperature display
  • Temperature graphing with pan/zoom
  • Configurable temperature alarms
  • Snapshot and continuous recording
  • Recipe presets for cooking
  • History of recorded readings
Features
Read full description

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.

About

ThermoWorks

Monitor cooking, BBQ, and ambient temperatures with compatible Bluetooth and Wi-Fi devices. Features enhanced graphing, alarms with push notifications, and cloud storage for session data. Ideal for professionals and enthusiasts needing precise temperature control.

Highlights
  • Real-time temperature monitoring
  • Customizable temperature alarms
  • Push notifications for alerts
  • Enhanced graphing capabilities
  • Cloud storage for session data
  • Checklist function for safety protocols
Features
Read full description

ThermoWorks App: The Ultimate Temperature Tracking Companion Experience how nothing Works like ThermoWorks with ThermoWorks app, a powerful tool for monitoring cooking, BBQ, and ambient temperatures using compatible Bluetooth and Wi-Fi connected devices. Main features an enhanced interface, simplified setup, improved graphing and checklist capabilities, and easy connection to the Cloud, ThermoWorks app makes temperature tracking a breeze. Stay Connected and In Control Set up temperature alarms with push notifications to stay informed. Whether you're a competitive BBQ enthusiast, a professional chef, a dedicated home cook, or a laboratory or warehouse worker, you'll know exactly when to make critical adjustments. All session data, including user notes and saved graphs, is stored in ThermoWorks Cloud for unlimited access and easy review whenever needed. The app also features a checklist function, ensuring that food businesses can meticulously follow safety protocols, making it an essential tool for maintaining high standards in any environment. Backed by Expertise You Can Trust ThermoWorks products are trusted by more competitive BBQ teams, celebrity chefs, and food professionals than any other brand. With decades of experience in temperature technology and support from our in-house accredited calibration laboratory, ThermoWorks is your go-to when precision matters. Compatible Instruments: RFX: Uses advanced radio frequency technology to connect RFX MEAT wireless meat probe and RFX GATEWAY, providing reliable, real-time temperature monitoring for ultimate control in any cooking environment. Signals: 4-channel BBQ alarm with Bluetooth and Wi-Fi for versatile, remote temperature monitoring. Works seamlessly with Billows control fan for perfect pit control. BlueDOT: 1-channel BBQ alarm utilizing Bluetooth, allowing you to set high/low alarms, track min/max temperatures, and save data. Smoke Gateway: Connects the Smoke 2-channel BBQ alarm to Wi-Fi, sending data directly to ThermoWorks Cloud for remote monitoring and alerts. ThermaQ Blue: Measures dual thermocouple probes for professional-grade accuracy, ideal for competitive pitmasters and serious cooks. ThermaQ WiFi: Dual-channel monitoring over Wi-Fi, perfect for commercial kitchens and serious home cooks. ThermaData WiFi: Logs critical temperature data, stores up to 18,000 readings, and sends alerts for complete peace of mind. NODE: Monitor temperatures, humidity, and more 24/7 from anywhere with alerts sent directly to your device. App Requirements: Compatible device including Signals, BlueDOT, ThermaQ Blue, ThermaQ WiFi, ThermaData WiFi, NODE, Smoke, Smoke Gateway, RFX GATEWAY, or RFX MEAT. Requires a 2.4 GHz Wi-Fi network for initial device setup and internet connection for data synchronization

Screenshots

iCelsius2 screens
ThermoWorks4 screens

Verdict

The call

The clearest difference is rating: ThermoWorks at 4.8 against iCelsius's 4.2. ThermoWorks also leads on review sentiment (65% vs 35%) and ratings volume (17K vs 139). iCelsius's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

ThermoWorks holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: ThermoWorks has 17K ratings behind it against 139, so its average is the more settled of the two. Written reviews point the same way: 35% of iCelsius's written reviews are positive against 65% of ThermoWorks's.

UpkeepUpdate frequency

iCelsius ships an update every 2 months, ThermoWorks monthly. The most recent releases landed on August 18, 2026 and September 28, 2026 respectively.

Scorecard5 real differences · 5 level
iCelsius versus ThermoWorks: the parameters behind the verdict, then further details
ParameteriCelsiusThermoWorks
PriceFreeFree
Rating4.2 (139 ratings)4.8 (17K ratings) — better
Positive reviews35.2% of reviews64.7% of reviews — better
Number of ratings13917K — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS12.0 — better15.6
Further details — not scored
Size41 MB54 MB
Age rating4+17+
DeveloperAginova SarlThermoWorks, Inc

Customer experience

iCelsius

All ratings139 ratings
Positive81.3%
Neutral5.0%
Negative13.7%
Written reviews54 reviews
Positive35.2%
Neutral13.0%
Negative51.9%

ThermoWorks

All ratings16,700 ratings
Positive97.6%
Neutral1.4%
Negative0.9%
Written reviews272 reviews
Positive64.7%
Neutral11.0%
Negative24.3%

User reviews

iCelsius

From 139 App Store ratings

What we love

  • 👍 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)

Room to improve

  • 🐛 Frequent crashes
  • 🐛 Connectivity issues (Wi-Fi, Bluetooth)
  • 🐛 Unreliable remote sensing
  • 🐛 Inconsistent readings/inaccurate
  • 🐛 Hardware failures (probes dying)

ThermoWorks

From 17K App Store ratings

What we love

  • 🚀 Accurate temperature monitoring
  • 🔒 Reliable WiFi connectivity
  • 👍 Intuitive app interface
  • 🚀 Convenient remote monitoring
  • 👍 Helpful customer support

Room to improve

  • 🐛 Occasional app crashes
  • 🔋 Battery drain issues
  • 👎 Lacking advanced features
  • 🔒 Limited password support
  • 👎 Inconsistent notification alerts

Bugs and requests

iCelsius

Reported bugs

33 issues
  • 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
Show 28 more
  • 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

Requested features

18 requests
  • 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
Show 13 more
  • 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

ThermoWorks

Reported bugs

4 issues
  • Setup process can be confusing
  • Bluetooth connectivity problems
  • Delayed cloud data updates
  • Probe temperature discrepancies

Requested features

5 requests
  • Apple Watch app support
  • Ability to zoom in on graphs
  • More customization options
  • Improved data syncing between devices
  • Predictive cooking time estimates

In-app purchases

None

iCelsius

No in-app purchases

None

ThermoWorks

No in-app purchases

Questions

Is iCelsius free?
iCelsius is free to download, with no in-app purchases.
Is ThermoWorks free?
ThermoWorks is free to download, with no in-app purchases.
Which has better reviews, iCelsius or ThermoWorks?
ThermoWorks is rated higher. iCelsius averages 4.2 out of 5 from 139 ratings, while ThermoWorks averages 4.8 from 17K ratings.
Do iCelsius or ThermoWorks have ads?
Neither iCelsius nor ThermoWorks shows ads.
Which is updated more often, iCelsius or ThermoWorks?
iCelsius ships an update every 2 months, and ThermoWorks monthly. Most recently, iCelsius was updated on August 18, 2026 and ThermoWorks on September 28, 2026.

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