# iCelsius vs Thermo

The clearest difference is rating: iCelsius at 4.2 against Thermo's 1.0. iCelsius also leads on ratings volume (139 vs 2) and update cadence (every 2 months vs every 7 months). Thermo's advantage is iOS requirement (8.0 vs 12.0). 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.

iCelsius holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: iCelsius has 139 ratings behind it against 2, so its average is the more settled of the two.

iCelsius ships an update every 2 months, Thermo every 7 months. The most recent releases landed on August 18, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | iCelsius | Thermo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (139 ratings)](https://appshunter.io/ios/app/icelsius/id434212879/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/thermo-meter/id1301838600/reviews) |
| Number of ratings | **139** | 2 |
| Positive reviews | 35.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Free | Free |
| Size | 41 MB | 3 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aginova Sarl](https://appshunter.io/developer/434212882) | [Software Shop](https://appshunter.io/developer/1288503758) |

## 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


### Thermo

[App page](https://appshunter.io/ios/app/thermo-meter/id1301838600)

This utility app displays temperature data from connected equipment in Excel and data plots with a 1-second response time. It allows users to save and share measurements, adjust data reception intervals, and monitor environmental temperature trends in real-time.

**Highlights:** Real-time data display, Excel and data plot export, Save measurement data, Share data to social apps, Adjustable data reception interval, Monitor environmental trends

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iCelsius free?

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

### Is Thermo free?

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

### Which has better reviews, iCelsius or Thermo?

iCelsius is rated higher. iCelsius averages 4.2 out of 5 from 139 ratings, while Thermo averages 1.0 from 2 ratings.

### Do iCelsius or Thermo have ads?

Neither iCelsius nor Thermo shows ads.

### Which is updated more often, iCelsius or Thermo?

iCelsius ships an update every 2 months, and Thermo every 7 months. Most recently, iCelsius was updated on August 18, 2026 and Thermo on September 9, 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.*