Revolutionizing How Athletes
Train in the heat
HeatSense combines advanced thermal tracking with a powerful, easy-to-use app—giving athletes, coaches, and parents real-time insights to make smarter training decisions.
Simple Setup
Get started in minutes
Just strap on your HeatSense sensor—bicep or chest—pair with the app, and you’re ready to go.
Real-time Insights
Your body, your data—live
Track how your body responds to heat and adjust in real time.
Smart alerts
Know Your Heat Response
Get automatic alerts so you can rest when your body needs it and train with more confidence.
Thermal Technology
HeatSense, powered by CORE, brings athletes cutting-edge thermal monitoring technology. CORE’s wearable heat flux sensor delivers precise, real-time core body temperature data and insights to keep athletes performing safely
Powerful Insights backed by Science
Our insights are guided by leading thermoregulation scientists and PhDs who specialize in how heat affects the human body. Their research informs every alert and recommendation—grounding HeatSense in decades of physiological expertise and real-world validation. This means you're not just getting numbers—you’re getting science-informed guidance to support athlete performance, improve heat awareness, and help teams respond before signs of heat stress escalate.
Performance Insights with the HeatSense Athlete App
Understand your heat response before it impacts performance
Track core body temperature, heart rate, and skin temperature in real time.
Train smarter in the heat
Compare today's conditions to your body's heat readiness
Training condition insights
Use Wet Bulb Globe Temperature to guide safe training decisions
Learn more about WBGT
For athletes, teams, and clubs
HeatSense is built for athletes, parents, coaches, athletic directors, schools, and club organizations. Whether you're training solo or managing a full roster, HeatSense provides tools to support performance, recovery, and decision-making during extreme heat. We invite parents to help us change the status quo by referring their teams or district leaders—every introduction matters, and we personally follow up on each one.
Learn More About Our Partner, CORE
The world’s best endurance coaches and athletes use CORE to facilitate heat training for optimizing performance
Frequently Asked Questions
Setting up HeatSense takes just minutes. Charge the sensor, strap it sensor on your bicep or chest, download the HeatSense app from the App Store or Google Play, pair via Bluetooth, and you're ready to train. The sensor calibrates during your first 10-15 minutes of wear.
The HeatSense sensor battery lasts approximately 12-15 hours of continuous use, which covers multiple training sessions. Charge it with the included USB cable between uses.
The HeatSense sensor has been validated against ingestible temperature capsules (the gold standard) with accuracy within ±0.3-0.4°C across different activity levels, sexes, and environmental conditions. It's trusted by 60% of UCI WorldTour cycling teams and 7 of the top 10 finishers at the 2024 Kona Ironman.
Core temperature shows what's happening inside your body—how hard your system is working to manage heat. Skin temperature reflects your body's cooling efforts. Together with heart rate and environmental data (WBGT), these measurements reveal your complete heat response picture.
Wear HeatSense during any outdoor training, practice, or competition when heat could be a factor. This includes hot weather, high humidity conditions, or any time you're concerned about heat exposure—even if the temperature seems moderate.