iCelsius vs FireBoard®
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Live temperature display
- Temperature graphing with pan/zoom
- Configurable temperature alarms
- Snapshot and continuous recording
- Recipe presets for cooking
- History of recorded readings
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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.
FireBoard®
This smart thermometer offers cloud-connected remote temperature monitoring for various environments. It supports multiple probes for accurate readings and can be accessed from anywhere via the cloud.
- Cloud-connected smart thermometer
- Remote temperature monitoring
- Supports up to 6 temperature probes
- Real-time temperature updates
- Viewable anywhere via cloud
- Wireless network setup
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FireBoard® is a Cloud Connected Smart Thermometer, designed for remote monitoring in both hot and cold environments. Easy to setup and install on your wireless network, the FireBoard® pushes realtime temperature updates via the cloud, viewable anywhere. The FireBoard® supports up to 6 external temperature probes which provide accurate and reliable temperature monitoring in many different environments and applications. Integrated into the Yoder Smokers S-Series Line of Pellet Smokers. Purchase the FireBoard® and Accessories Online at: www.fireboard.com
Screenshots
Verdict
The clearest difference is rating: FireBoard® at 4.8 against iCelsius's 4.2. FireBoard® also leads on review sentiment (72% vs 35%) and ratings volume (5.8K vs 139). iCelsius's advantage is monetization model (free vs paid) and iOS requirement (12.0 vs 16.6). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FireBoard® holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: FireBoard® has 5.8K 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 72% of FireBoard®'s.
iCelsius ships an update every 2 months, FireBoard® every 3 weeks. The most recent releases landed on August 18, 2026 and September 27, 2026 respectively.
| Parameter | iCelsius | FireBoard® |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (139 ratings) | 4.8 (5.8K ratings) — better |
| Positive reviews | 35.2% of reviews | 71.8% of reviews — better |
| Number of ratings | 139 | 5.8K — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 41 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Aginova Sarl | FireBoard Labs, LLC |
Customer experience
iCelsius
FireBoard®
User reviews
iCelsius
From 139 App Store ratingsWhat 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)
FireBoard®
From 5.8K App Store ratingsWhat we love
- 🎯 Highly accurate temperature readings
- 📱 Intuitive and user-friendly app interface
- 🌐 Reliable WiFi and Bluetooth connectivity
- 🔋 Excellent battery life for long cooks
- ⚙️ Powerful temperature control and automation
Room to improve
- 🐛 WiFi connection drops after extended use
- 🐛 App crashes and freezes periodically
- 🐛 Session data sometimes disappears unexpectedly
- 🐛 Probe readings become inaccurate over time
- 🐛 Recent UI updates made app confusing
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 moreShow fewer
- 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 moreShow fewer
- 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
FireBoard®
Reported bugs
23 issues- WiFi connection drops after 3-4 hours of cooking
- App sessions not staying open during cook
- Auto-created sessions not appearing in app
- Lost host connection error codes
- Programs stopping mid-cook
Show 18 moreShow fewer
- Account signup flow broken on iOS
- Pulse wireless probe slow refresh rate
- Temperature readings inconsistent and funky after 6 months
- App crashes constantly after recent update
- Session tab showing wrong device name
- Temperature graph y-axis showing wrong units (F instead of C)
- Chart zoom functionality locks up requiring app reinstall
- Toggle switches not functioning properly
- Cannot add notes to sessions
- Channel labels and alerts resetting randomly
- Fan control stuck on lid setting
- Temperature display disappearing intermittently
- Google Home voice command setting wrong temperature values
- Dashboard zooming out excessively with multiple probes
- Defective K-type probes with quality issues
- Login errors and password reset failures
- Inconsistent temperature readings requiring base restart
- Drive cable emitting constant sound with toggle not working
Requested features
20 requests- iOS home screen widget for quick temperature viewing
- Apple Watch complications for at-a-glance monitoring
- Dynamic Island support for iPhone
- Live activity notifications for iOS
- Landscape mode for tablet/wall-mounted displays
Show 15 moreShow fewer
- Ability to save temperature alerts in Drive programs
- Custom probe color selection across full RGB spectrum
- Desktop/Mac app version
- Ability to view individual probe graphs without overlay
- Set point temperature graphing on charts
- Scheduled session start times
- Time-stamped notes and photo annotations
- Siri voice control integration
- Preset cooking profiles for common meats
- Simplified dashboard with basic controls
- Google Home temperature setting voice command fix
- Battery level indicator on every page
- USB-C charging instead of Micro USB
- 24+ hour session recording without breaks
- Channel label and alert persistence across sessions
In-app purchases
iCelsius
No in-app purchases
FireBoard®
No in-app purchases
