CORE Thermal Sensor Apple

CORE Thermal Sensor

Temperature Monitoring System

Features & Capabilities

The CORE Thermal Sensor accurately measures your core body temperature and thermal strain on your body – continuously and non-invasively. Thermal data and insights are critical for facilitating safe and effective heat training and for performing optimally on race day. Designed for athletes at all levels, CORE will help to improve your training and performance in your personal adventures or races.

IMPORTANT: The CORE app is designed to work with the CORE device which you can order at www.corebodytemp.com

Here's how it works: • Set up your CORE sensor: connect your heart rate monitor and sports devices for optimal sensor use. • Measure your thermal vitals during training: mount the newly designed clip on your heart rate strap and snap in the CORE sensor. Shake the sensor to wake it up, wear it and track your thermal data. • Core body temperature: the interior temperature deep in your body, including organs and other tissues. A critical measure during sports, it can reach up to 40°C (104°F) during vigorous activity in hot environments. Be aware that hotter is not better – cooler is faster. • Heat Strain Index: A combination of your core body temperature and skin temperature representing the thermal strain on your body. The real-time feedback on how hard your body is working to stay cool, delivering a value from 0 (no heat strain) to around 10 (extremely high heat strain). • Heat Zones: Your Heat Strain Index divided into easy-to-use zones. Heat Zone 3 will likely lead to a performance loss, BUT it is the needed stimuli to create adaptations in your body. During heat training, strive for time in heat zone 3. During racing, stay cool and prevent a performance loss by staying in heat zone 1 or 2. • Heat Training Load: a cumulative daily metric of the heat strain on your body. A daily value of 10 out of 10 indicates ideal contribution to heat adaptations. More is not always better! • Heat Adaptation Score: Track your heat adaptations over time with effective heat training. Get a heat champion to perform best in the heat. Long-term heat training will most likely lead to improvements also in cool conditions. • Add your passive heat training: Supplementing your active heat training or general training with passive heat exposure in a sauna or hot bath. You can track your sessions in the app manually, contributing to your heat adaptation score. NOTE: do NOT take your CORE sensor into the sauna or hot environments.

What else you can do in the CORE app: • Dig into the details: See a breakdown of your thermal data, and even see trends across days, weeks and months. • Share your CORE metrics with your friends through the social sharing feature, earning more kudos and likes • Connect your connectivity accounts (e.g. Garmin) to directly synchronize your data after the training. • Update your sensor to the latest firmware ensuring having the best sensor functionality.

Note: CORE provides products and services designed for general fitness and training purposes. For accurate measurement readings during sports, a connection to a heart rate monitor is necessary. CORE products and services are not medical devices, not intended to treat or diagnose any disease, and should not be used as a substitute for professional medical advice, diagnosis or treatment. All content available through CORE products and services is for general informational purposes only.

User Growth & Download Statistics

App
By:
greenteg AG
Rating:
2.50
(33)
Version:
2.5.3 Last updated: 2026-04-13
Version code:
884232680
Creation date:
2020-09-24
Compatible devices:
Size:
51.05MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-12
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
greenteg AG
Apple Apps Store
https://apps.apple.com/us/app/core-thermal-sensor/id1521866309
Website:
https://corebodytemp.com

User Reviews

Overall, reviewers praise the CORE sensor for accurate core-temperature readings and its potential as a training tool with data graphs and Garmin Connect integration. However, the app suffers from reliability and data issues: setup/opening failures, stuck updates/calibration, inconsistent history syncing, no Apple Health integration, and several UI/UX problems (iPad layout, unreliable unit switching). The device shows promise, but stability, data reliability, and cross-platform compatibility need significant improvement.
Pros
  • Accurate core temperature readings from the CORE sensor.
  • Useful for training and heat management, guiding workouts based on core temp.
  • App graphs and stores temperature data over time.
  • Garmin Connect compatibility and data flow to Garmin ecosystem.
  • Supports Fahrenheit and Celsius displays.
Cons
  • Frequent app reliability issues: setup failures and inability to open the app.
  • Updates and calibration can get stuck; update downloads may fail.
  • Inconsistent history data synchronization; data appears late or not at all in the main view.
  • No Apple Health integration; data not syncing to Health; limited cross-device health data.
  • UI/UX/platform issues: iPad landscape problems and unreliable unit switching.
Recent reviews
I’ve been using the core 2 for over a year. This app is half baked. Connection to the core 2 sensor can be very frustrating. There is significant lag with readings. I often use the app to track my heat strain in real time, but the app doesn’t reliably tabulate either time in zone. I’ve been riding for an hour as I write this and all the zones on the histogram say zero. The daily heat training bar also says zero. So you can’t use a daily heat training load as a daily end point for your training. Also, when logging passive heat training, it would be nice if it calculated how much time you needed to spend doing each activity to achieve a particular daily heat training load. E.g. based on the ride I’m doing now, it would be nice if the app told me I had to do 20 minutes of sauna to achieve the daily heat load of 10.
by Ja*****, 2026-06-01

IOS 26 Cannot even get past the initial setup. Just get Failed to Save Preferences no matter what I choose.
by Sc*****, 2025-09-27

The app can not to open up normally.
by PT*****, 2025-07-16
View all user reviews ›

Best CORE Thermal Sensor Alternatives

Here are some Apple apps that are similar to CORE Thermal Sensor: