# iCelsius vs FireBoard®

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.

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.

## The numbers

| Metric | iCelsius | FireBoard® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (139 ratings)](https://appshunter.io/ios/app/icelsius/id434212879/reviews) | **[4.8 (5.8K ratings)](https://appshunter.io/ios/app/fireboard/id1049169343/reviews)** |
| Number of ratings | 139 | **5.8K** |
| Positive reviews | 35.2% of reviews | **71.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 41 MB | 19 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Aginova Sarl](https://appshunter.io/developer/434212882) | [FireBoard Labs, LLC](https://appshunter.io/developer/1049169342) |

## What reviewers say

### iCelsius

[App page](https://appshunter.io/ios/app/icelsius/id434212879)

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:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 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)

**What reviewers complain about**

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

**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

**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


### FireBoard®

[App page](https://appshunter.io/ios/app/fireboard/id1049169343)

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.

**Highlights:** Cloud-connected smart thermometer, Remote temperature monitoring, Supports up to 6 temperature probes, Real-time temperature updates, Viewable anywhere via cloud, Wireless network setup

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎯 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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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

**Requested features**

- 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


## Frequently asked questions

### Is iCelsius free?

iCelsius is free to download, with no in-app purchases.

### Is FireBoard® free?

FireBoard® is free to download, with no in-app purchases.

### Which has better reviews, iCelsius or FireBoard®?

FireBoard® is rated higher. iCelsius averages 4.2 out of 5 from 139 ratings, while FireBoard® averages 4.8 from 5.8K ratings.

### Do iCelsius or FireBoard® have ads?

Neither iCelsius nor FireBoard® shows ads.

### Which is updated more often, iCelsius or FireBoard®?

iCelsius ships an update every 2 months, and FireBoard® every 3 weeks. Most recently, iCelsius was updated on August 18, 2026 and FireBoard® on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*