# CORE Thermal Sensor vs FluidLogic®

The clearest difference is rating: FluidLogic® at 5.0 against CORE Thermal Sensor's 2.5. FluidLogic® also leads on update cadence (monthly vs every 2 months). CORE Thermal Sensor's advantage is ratings volume (35 vs 5). 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.

FluidLogic® holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: CORE Thermal Sensor has 35 ratings behind it against 5, so its average is the more settled of the two.

CORE Thermal Sensor ships an update every 2 months, FluidLogic® monthly. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | CORE Thermal Sensor | FluidLogic® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (35 ratings)](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/fluidlogic/id6444137412/reviews)** |
| Number of ratings | **35** | 5 |
| Positive reviews | 15.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 55 MB | 53 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [greenteg AG](https://appshunter.io/developer/1510577388) | [Fluidlogic, Inc.](https://appshunter.io/developer/1494959180) |

## What reviewers say

### 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


### FluidLogic®

[App page](https://appshunter.io/ios/app/fluidlogic/id6444137412)

This app provides a personalized, science-backed hydration plan to optimize performance and recovery. It works with a smart hydration pack to track intake, offer haptic reminders, and allow for on-demand water delivery.

**Highlights:** Personalized hydration protocol, Customizable dose and interval settings, Haptic hydration reminders, Remote push-to-drink control, Real-time tracking and insights, Seamless system integration

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

**In-app purchases:** none


## Frequently asked questions

### Is CORE Thermal Sensor free?

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

### Is FluidLogic® free?

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

### Which has better reviews, CORE Thermal Sensor or FluidLogic®?

FluidLogic® is rated higher. CORE Thermal Sensor averages 2.5 out of 5 from 35 ratings, while FluidLogic® averages 5.0 from 5 ratings.

### Do CORE Thermal Sensor or FluidLogic® have ads?

Neither CORE Thermal Sensor nor FluidLogic® shows ads.

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

CORE Thermal Sensor ships an update every 2 months, and FluidLogic® monthly. Most recently, CORE Thermal Sensor was updated on September 23, 2026 and FluidLogic® on September 17, 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.*