# CORE Thermal Sensor vs Pacer for Running

The clearest difference is rating: CORE Thermal Sensor at 2.5 against Pacer for Running's 1.0. CORE Thermal Sensor also leads on ratings volume (35 vs 1) and review sentiment (19% vs 0%). Pacer for Running's advantage is update cadence (every 5 days vs every 2 months). 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.

CORE Thermal Sensor holds the better App Store score, 2.5 against 1.0. That said, the two scores are not equally well evidenced: CORE Thermal Sensor has 35 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 19% of CORE Thermal Sensor's written reviews are positive against 0% of Pacer for Running's.

CORE Thermal Sensor ships an update every 2 months, Pacer for Running every 5 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | CORE Thermal Sensor | Pacer for Running |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (35 ratings)](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/pacer-for-running/id6474128468/reviews) |
| Number of ratings | **35** | 1 |
| Positive reviews | **18.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 55 MB | 102 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [greenteg AG](https://appshunter.io/developer/1510577388) | [NeumaFIT Co.,ltd](https://appshunter.io/developer/1646227461) |

## 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


### Pacer for Running

[App page](https://appshunter.io/ios/app/pacer-for-running/id6474128468)

This app guides users through a Cardiopulmonary Exercise Test (CPET) using a connected device for precise cardio performance data. It provides detailed reports and personalized training plans to enhance running progress and reduce injury risk.

**Highlights:** Guided Cardiopulmonary Exercise Test (CPET), Connects with PACER device, Accurate cardio performance data, Detailed test reports, Personalized training plans, Injury risk minimization

**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 Pacer for Running free?

Pacer for Running is free to download, with no in-app purchases.

### Which has better reviews, CORE Thermal Sensor or Pacer for Running?

CORE Thermal Sensor is rated higher. CORE Thermal Sensor averages 2.5 out of 5 from 35 ratings, while Pacer for Running averages 1.0 from 1 ratings.

### Do CORE Thermal Sensor or Pacer for Running have ads?

Neither CORE Thermal Sensor nor Pacer for Running shows ads.

### Which is updated more often, CORE Thermal Sensor or Pacer for Running?

CORE Thermal Sensor ships an update every 2 months, and Pacer for Running every 5 days. Most recently, CORE Thermal Sensor was updated on November 3, 2026 and Pacer for Running on November 4, 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.*