# iCelsius vs ThermoWorks

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.

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

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.

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

## The numbers

| Metric | iCelsius | ThermoWorks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (139 ratings)](https://appshunter.io/ios/app/icelsius/id434212879/reviews) | **[4.8 (17K ratings)](https://appshunter.io/ios/app/thermoworks/id1503955408/reviews)** |
| Number of ratings | 139 | **17K** |
| Positive reviews | 35.2% of reviews | **64.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 41 MB | 54 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [Aginova Sarl](https://appshunter.io/developer/434212882) | [ThermoWorks, Inc](https://appshunter.io/developer/569889016) |

## 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


### ThermoWorks

[App page](https://appshunter.io/ios/app/thermoworks/id1503955408)

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

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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

**Reported bugs**

- Setup process can be confusing
- Bluetooth connectivity problems
- Delayed cloud data updates
- Probe temperature discrepancies

**Requested features**

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


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