# ThermoWatch+ for Watch vs CORE Thermal Sensor

The clearest difference is ads: CORE Thermal Sensor at none against ThermoWatch+ for Watch's shown. CORE Thermal Sensor also leads on monetization model (free vs ad-supported). ThermoWatch+ for Watch's advantage is iOS requirement (8.2 vs 15.1). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 2.5 for ThermoWatch+ for Watch against 2.5 for CORE Thermal Sensor. Both are backed by a comparable volume of ratings — 90 and 35 respectively. Written reviews are what separate them: 21% of ThermoWatch+ for Watch's written reviews are positive against 19% of CORE Thermal Sensor's.

ThermoWatch+ for Watch ships an update every 3 months, CORE Thermal Sensor every 2 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | ThermoWatch+ for Watch | CORE Thermal Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (90 ratings)](https://appshunter.io/ios/app/thermowatch-plus-for-watch/id1070746022/reviews)** | [2.5 (35 ratings)](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309/reviews) |
| Number of ratings | **90** | 35 |
| Positive reviews | **21.2% of reviews** | 18.8% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Ad-supported | **Free** |
| Size | 10 MB | 55 MB |
| Requires iOS | **8.2** | 15.1 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Airwire products.](https://appshunter.io/developer/471910489) | [greenteg AG](https://appshunter.io/developer/1510577388) |

## What reviewers say

### ThermoWatch+ for Watch

[App page](https://appshunter.io/ios/app/thermowatch-plus-for-watch/id1070746022)

Easily log body temperature and basal body temperature data directly from your Apple Watch to the Health app. Features a sophisticated UI designed for the Digital Crown, making data entry quick and intuitive. Note: This app registers measured values; the Apple Watch itself does not measure temperature.

**Highlights:** Add body temperature data via Apple Watch, Add basal body temperature data via Apple Watch, Sophisticated Digital Crown UI, Integrates with Apple Health

**Features:** Apple Watch app

**In-app purchases:** none


### CORE Thermal Sensor

[App page](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309)

This app continuously monitors your core body temperature and thermal strain, providing critical data for heat training and optimal race performance. It helps athletes of all levels improve their training and achieve better results.

**Highlights:** Continuous core body temperature monitoring, Real-time Heat Strain Index, Heat Zones for training and racing, Heat Training Load and Adaptation Score, Passive heat training tracking, Data trends and historical analysis, Connectivity with sports devices

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

**In-app purchases:** none


## Frequently asked questions

### Is ThermoWatch+ for Watch free?

ThermoWatch+ for Watch is free to download, with no in-app purchases.

### Is CORE Thermal Sensor free?

CORE Thermal Sensor is free to download, with no in-app purchases.

### Which has better reviews, ThermoWatch+ for Watch or CORE Thermal Sensor?

ThermoWatch+ for Watch is rated higher. ThermoWatch+ for Watch averages 2.5 out of 5 from 90 ratings, while CORE Thermal Sensor averages 2.5 from 35 ratings.

### Do ThermoWatch+ for Watch or CORE Thermal Sensor have ads?

ThermoWatch+ for Watch shows ads; CORE Thermal Sensor does not.

### Which is updated more often, ThermoWatch+ for Watch or CORE Thermal Sensor?

ThermoWatch+ for Watch ships an update every 3 months, and CORE Thermal Sensor every 2 months. Most recently, ThermoWatch+ for Watch was updated on October 24, 2026 and CORE Thermal Sensor on October 23, 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.*