# CORE Thermal Sensor vs Aletheia Run

The clearest difference is review sentiment: Aletheia Run at 100% against CORE Thermal Sensor's 19%. Aletheia Run also leads on rating (4.9 vs 2.5) and update cadence (weekly vs every 2 months). CORE Thermal Sensor's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, in-app purchases and device support there is nothing between them.

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

Aletheia Run holds the better App Store score, 4.9 against 2.5. Both are backed by a comparable volume of ratings — 35 and 24 respectively. Written reviews point the same way: 19% of CORE Thermal Sensor's written reviews are positive against 100% of Aletheia Run's.

CORE Thermal Sensor ships an update every 2 months, Aletheia Run weekly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CORE Thermal Sensor | Aletheia Run |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (35 ratings)](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309/reviews) | **[4.9 (24 ratings)](https://appshunter.io/ios/app/aletheia-run/id6479916698/reviews)** |
| Number of ratings | **35** | 24 |
| Positive reviews | 18.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 55 MB | 31 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [greenteg AG](https://appshunter.io/developer/1510577388) | [Project Dasein](https://appshunter.io/developer/1737493151) |

## 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


### Aletheia Run

[App page](https://appshunter.io/ios/app/aletheia-run/id6479916698)

Visualize your running form and the forces acting on your body with this app. It provides personalized feedback and exercise recommendations to help you improve performance and reduce injury risk. Track changes in your form over time with detailed metrics and visual analysis.

**Highlights:** Visualize running force portraits, Analyze biomechanics and form, Receive personalized exercise recommendations, Track real-time visual and metric changes, Log running discomfort, Compare performance across runs

**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 Aletheia Run free?

Aletheia Run is free to download, with no in-app purchases.

### Which has better reviews, CORE Thermal Sensor or Aletheia Run?

Aletheia Run is rated higher. CORE Thermal Sensor averages 2.5 out of 5 from 35 ratings, while Aletheia Run averages 4.9 from 24 ratings.

### Do CORE Thermal Sensor or Aletheia Run have ads?

Aletheia Run shows ads; CORE Thermal Sensor does not.

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

CORE Thermal Sensor ships an update every 2 months, and Aletheia Run weekly. Most recently, CORE Thermal Sensor was updated on October 23, 2026 and Aletheia Run on October 24, 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.*