# Thermo vs CORE Thermal Sensor

The clearest difference is rating: Thermo at 3.6 against CORE Thermal Sensor's 2.5. Thermo also leads on update cadence (monthly vs every 2 months). CORE Thermal Sensor's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price, ratings volume, device support and iOS requirement there is nothing between them.

Both are free to download. Thermo sells 8 in-app purchases, starting at $10.99 per month. CORE Thermal Sensor asks for nothing beyond the download.

Thermo holds the better App Store score, 3.6 against 2.5. Both are backed by a comparable volume of ratings — 97 and 35 respectively. Written reviews complicate that: 5% of Thermo's written reviews are positive against 16% of CORE Thermal Sensor's, so the app with the better star average is not the one people write more warmly about.

Thermo ships an update monthly, CORE Thermal Sensor every 2 months. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Thermo | CORE Thermal Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (97 ratings)](https://appshunter.io/ios/app/thermo-temperature-check-in/id1046767441/reviews)** | [2.5 (35 ratings)](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309/reviews) |
| Number of ratings | **97** | 35 |
| Positive reviews | 5.0% of reviews | **15.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Freemium | **Free** |
| Size | 85 MB | 55 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Daily Discovers](https://appshunter.io/developer/1408603176) | [greenteg AG](https://appshunter.io/developer/1510577388) |

## What reviewers say

### Thermo

[App page](https://appshunter.io/ios/app/thermo-temperature-check-in/id1046767441)

Easily track family health by logging temperature changes and other vital signs. Create individual profiles to monitor each person's well-being over time with helpful charts and graphs. Set personalized reminders for consistent tracking and utilize voice input for added convenience.

**Highlights:** Family health tracking, Individual profiles, Temperature logging, Health dynamic graphs, Personalized reminders, Voice input, Apple Watch sync

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thermo  - 1 Month no trial | $10.99 | per month |
| Thermo Premium | $12.99 | per month |
| Thermo Premium - 1 month | $12.99 | per month |
| Thermo - Digital Wellness | $18.99 | per 3 months |
| Thermo - Digital Wellness + | $19.99 | per month |
| Thermo Plus - 12 months | $27.99 | per year |
| 3 months subscription | $39.99 | per 3 months |
| 3 Month Subscription | $59.99 | per 3 months |


### 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 Thermo free?

Thermo is free to download, with in-app purchases available.

### Is CORE Thermal Sensor free?

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

### Which has better reviews, Thermo or CORE Thermal Sensor?

Thermo is rated higher. Thermo averages 3.6 out of 5 from 97 ratings, while CORE Thermal Sensor averages 2.5 from 35 ratings.

### Do Thermo or CORE Thermal Sensor have ads?

Thermo shows ads; CORE Thermal Sensor does not.

### Which is updated more often, Thermo or CORE Thermal Sensor?

Thermo ships an update monthly, and CORE Thermal Sensor every 2 months. Most recently, Thermo was updated on September 16, 2026 and CORE Thermal Sensor on September 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.*