# CORE Thermal Sensor vs T

The clearest difference is review sentiment: T at 100% against CORE Thermal Sensor's 16%. T also leads on rating (5.0 vs 2.5) and update cadence (every 3 weeks vs every 2 months). CORE Thermal Sensor's advantage is ads (none vs shown) and ratings volume (35 vs 2). On price and in-app purchases there is nothing between them.

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

T 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 2, so its average is the more settled of the two. Written reviews point the same way: 16% of CORE Thermal Sensor's written reviews are positive against 100% of T's.

CORE Thermal Sensor ships an update every 2 months, T every 3 weeks. Both last shipped on October 2, 2026.

## The numbers

| Metric | CORE Thermal Sensor | T |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (35 ratings)](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/t-zero/id6746770165/reviews)** |
| Number of ratings | **35** | 2 |
| Positive reviews | 15.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 55 MB | 14 MB |
| Requires iOS | **15.1** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [greenteg AG](https://appshunter.io/developer/1510577388) | [Jatuzzi LLC](https://appshunter.io/developer/1766809777) |

## 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


### T

[App page](https://appshunter.io/ios/app/t-zero/id6746770165)

This app helps triathletes organize race day logistics, track results, plan nutrition, and manage gear. It also connects athletes with a community for sharing advice and finding training partners.

**Highlights:** Race day checklists, Nutrition planning, Gear tracking and wishlist, Course map access, Race results tracking, Community forums and messaging, PacePal partner matching

**Features:** macOS Compatibility

**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 T free?

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

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

T is rated higher. CORE Thermal Sensor averages 2.5 out of 5 from 35 ratings, while T averages 5.0 from 2 ratings.

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

T shows ads; CORE Thermal Sensor does not.

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

CORE Thermal Sensor ships an update every 2 months, and T every 3 weeks. Most recently, CORE Thermal Sensor was updated on October 2, 2026 and T on October 2, 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.*