# iCelsius vs Hanna Lab

The clearest difference is ratings volume: iCelsius at 139 against Hanna Lab's 10. iCelsius also leads on rating (4.2 vs 4.0) and update cadence (every 2 months vs every 5 months). Hanna Lab's advantage is review sentiment (45% vs 35%). 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 4.0. That said, the two scores are not equally well evidenced: iCelsius has 139 ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 35% of iCelsius's written reviews are positive against 45% of Hanna Lab's, so the app with the better star average is not the one people write more warmly about.

iCelsius ships an update every 2 months, Hanna Lab every 5 months. The most recent releases landed on August 18, 2026 and August 2, 2026 respectively.

## The numbers

| Metric | iCelsius | Hanna Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (139 ratings)](https://appshunter.io/ios/app/icelsius/id434212879/reviews)** | [4.0 (10 ratings)](https://appshunter.io/ios/app/hanna-lab/id913755813/reviews) |
| Number of ratings | **139** | 10 |
| Positive reviews | 35.2% of reviews | **45.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 41 MB | 32 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aginova Sarl](https://appshunter.io/developer/434212882) | [Hanna Instruments, Inc.](https://appshunter.io/developer/913755816) |

## 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


### Hanna Lab

[App page](https://appshunter.io/ios/app/hanna-lab/id913755813)

Transform your mobile device into a professional-grade pH meter or data management system. Connect with compatible Hanna Instruments probes and meters to conduct precise measurements, store data securely, and access it via the cloud.

**Highlights:** pH meter functionality with Bluetooth probes, Data management with compatible meters, Hanna Cloud compatibility for data sync, Live measurements and trend graphs, Data export in PDF and CSV formats, Calibration and logging features

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iCelsius free?

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

### Is Hanna Lab free?

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

### Which has better reviews, iCelsius or Hanna Lab?

iCelsius is rated higher. iCelsius averages 4.2 out of 5 from 139 ratings, while Hanna Lab averages 4.0 from 10 ratings.

### Do iCelsius or Hanna Lab have ads?

Neither iCelsius nor Hanna Lab shows ads.

### Which is updated more often, iCelsius or Hanna Lab?

iCelsius ships an update every 2 months, and Hanna Lab every 5 months. Most recently, iCelsius was updated on August 18, 2026 and Hanna Lab on August 2, 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.*