# Thermo vs Celsius Thermometer Plus

The clearest difference is price: Celsius Thermometer Plus at Free against Thermo's $3.99. Celsius Thermometer Plus also leads on iOS requirement (13 vs 17.0). Thermo's advantage is review sentiment (77% vs 38%) and in-app purchases (none vs 1). On rating and device support there is nothing between them.

Celsius Thermometer Plus is free to download; Thermo costs $3.99 up front. Celsius Thermometer Plus sells 1 one-off in-app purchase. Thermo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Thermo against 4.7 for Celsius Thermometer Plus. That said, the two scores are not equally well evidenced: Thermo has 1.9K ratings behind it against 54, so its average is the more settled of the two. Written reviews are what separate them: 77% of Thermo's written reviews are positive against 38% of Celsius Thermometer Plus's.

Thermo ships an update every 10 days, Celsius Thermometer Plus every 7 months. Both last shipped on September 22, 2026.

## The numbers

| Metric | Thermo | Celsius Thermometer Plus |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.7 (1.9K ratings)](https://appshunter.io/ios/app/thermo-hygrometer/id495546638/reviews) | [4.7 (54 ratings)](https://appshunter.io/ios/app/celsius-thermometer-plus/id537067563/reviews) |
| Number of ratings | **1.9K** | 54 |
| Positive reviews | **77.3% of reviews** | 38.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 7 months |
| Monetization | **Free** | Ad-supported |
| Size | 39 MB | 11 MB |
| Requires iOS | 17.0 | **13** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MORETHAN APPS](https://appshunter.io/developer/473001840) | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) |

## What reviewers say

### Thermo

[App page](https://appshunter.io/ios/app/thermo-hygrometer/id495546638)

This app provides a clear overview of outdoor temperature, humidity, and pressure with an emotionally designed, analog-inspired interface. It visualizes daily air conditions intuitively, including feels-like temperature and a discomfort index, based on your current location.

**Highlights:** Temperature, humidity, and pressure display, Discomfort Index calculation, Mini trend graph, Accurate barometer, Analog-inspired design, Widget support

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Simple and quick
- 👍 Accurate and reliable
- 🔍 Useful weather information
- 💡 Helpful for medical conditions
- 🔍 Great for tracking weather changes

**What reviewers complain about**

- 🐛 Crashes or won't update
- 🔍 Inaccurate temperature/humidity readings
- 💡 Lacks trending indicators for barometer
- 💡 Needs more location options

**Reported bugs**

- Crashes on launch
- Doesn't update properly
- Incorrect location data

**Requested features**

- Add barometer trend indicators
- Include 'feels like' temperature
- Add widget support
- Allow manual location selection
- Expand temperature range for hot climates


### Celsius Thermometer Plus

[App page](https://appshunter.io/ios/app/celsius-thermometer-plus/id537067563)

This app measures ambient temperature using GPS and displays it in Celsius, with a converter to Fahrenheit. It also includes a barometer and sunrise/sunset times. Useful for checking outdoor conditions and planning outfits.

**Highlights:** Ambient temperature measurement via GPS, Celsius to Fahrenheit conversion calculator, Barometric pressure sensor function, Sunrise and sunset time display, Temperature badge indicator

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Thermo free?

Thermo costs $3.99, with no in-app purchases.

### Is Celsius Thermometer Plus free?

Celsius Thermometer Plus is free to download, with in-app purchases available.

### Which has better reviews, Thermo or Celsius Thermometer Plus?

Thermo and Celsius Thermometer Plus are both rated 4.7 out of 5 on the App Store, from 1.9K and 54 ratings respectively.

### Do Thermo or Celsius Thermometer Plus have ads?

Celsius Thermometer Plus shows ads; Thermo does not.

### Which is updated more often, Thermo or Celsius Thermometer Plus?

Thermo ships an update every 10 days, and Celsius Thermometer Plus every 7 months. Most recently, Thermo was updated on September 22, 2026 and Celsius Thermometer Plus on September 22, 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.*