# Celsius Thermometer Plus vs Thermometer S

The clearest difference is in-app purchases: Thermometer S at none against Celsius Thermometer Plus's 1. Thermometer S also leads on update cadence (every 4 weeks vs every 7 months) and rating (5.0 vs 4.7). Celsius Thermometer Plus's advantage is ratings volume (54 vs 1) and iOS requirement (13 vs 15.0). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Celsius Thermometer Plus sells 1 one-off in-app purchase. Thermometer S asks for nothing beyond the download.

Thermometer S holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Celsius Thermometer Plus has 54 ratings behind it against 1, so its average is the more settled of the two.

Celsius Thermometer Plus ships an update every 7 months, Thermometer S every 4 weeks. The most recent releases landed on October 2, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Celsius Thermometer Plus | Thermometer S |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (54 ratings)](https://appshunter.io/ios/app/celsius-thermometer-plus/id537067563/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thermometer-s/id1511271470/reviews)** |
| Number of ratings | **54** | 1 |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 7 months | **Every 4 weeks** |
| Monetization | Ad-supported | Ad-supported |
| Size | 11 MB | 31 MB |
| Requires iOS | **13** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [Akira Yamamoto](https://appshunter.io/developer/1401669011) |

## What reviewers say

### 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 |


### Thermometer S

[App page](https://appshunter.io/ios/app/thermometer-s/id1511271470)

Monitor your environment's temperature and humidity with this app. It provides clear, easy-to-read data for health management, preventing heatstroke and colds, and mold prevention. Customize the display to show only the information you need.

**Highlights:** Large, clear temperature display, Humidity, precipitation, wind speed, and air pressure, Sensor-based or internet weather data, Customizable information display, Celsius/Fahrenheit unit switching, Simple, user-friendly design

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Celsius Thermometer Plus free?

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

### Is Thermometer S free?

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

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

Thermometer S is rated higher. Celsius Thermometer Plus averages 4.7 out of 5 from 54 ratings, while Thermometer S averages 5.0 from 1 ratings.

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

Both Celsius Thermometer Plus and Thermometer S show ads.

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

Celsius Thermometer Plus ships an update every 7 months, and Thermometer S every 4 weeks. Most recently, Celsius Thermometer Plus was updated on October 2, 2026 and Thermometer S on September 25, 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.*