HOW IT WORKS
Meet CORE, your portable metabolic analyzer.
Breath-by-breath testing for fitness and resting metabolism. See results in the app; paid plans add full reports and AI Coach guidance.
With 6 assessments & results.
Battery Time: Approx 3 hours of indoor use
Device Weight: Approx 170g*
Your aerobic fitness.
The intensity of your highest estimated fat oxidation.
Oxygen use at a given pace or power.
Your effort across repeated hard intervals.
Calories burned at rest.
Your response during a workout.
Every assessment includes a shareable snapshot. Paid plans add full reports and personalized guidance.
YOUR ASSESSMENT
Step by step.
Peak VO₂: About 15 minutes, including warm-up, on a treadmill or stationary bike. Resting metabolic rate: About 15–20 minutes, including instructions.
APP & ASSESSMENT OUTPUTS
Your assessments and progress, in one app.
Follow guided assessments, save or share snapshots, track progress and view live heart rate and VO₂ during HIIT and Open Sessions.
Designed for iOS and Android, the CORE app also displays selected live metrics, including heart rate and VO₂, on Apple Watch across four screens: Performance, Fuel, Cardiac and Ventilatory.
Optional Equipment Pairing:
Compatible treadmills add speed and incline.
Compatible stationary bikes add speed and power (watts).
Pairing records data; it does not control equipment.
AI COACH & HUMAN CONTROL
Guidance based on your assessment.
Paid plans include written AI Coach recommendations for training and nutrition, tailored to your results and goals.
Training guidance built around your goals.
Get personalized training zones and a weekly or monthly plan that divides your available time across five intensity zones. You or your coach choose workouts, training days, and exercise type, then update goals or availability anytime.
Nutrition targets built around your goals.
Get calorie and macronutrient targets based on your RMR assessment, goals and planned activity. AI Coach uses research-informed recommendations for protein, carbohydrates and fat, then updates targets as your goals or activity change.
Understand what CORE measures.
CORE measures oxygen, carbon dioxide and airflow. See how those measurements become insights into fitness, fuel use and resting metabolism.
EXPLORE PLANS
Find your CORE setup.
ATHLETES & INDIVIDUALS
Measure progress. Make training more effective.
Use CORE alongside your watch to assess fitness, guide training intensity and compare results over time.
CORE also supports targeted checks between full assessments for endurance athletes, people starting to train and the coaches who guide them.
HIIT
Compare live heart rate and VO₂ with your interval targets, helping you see how your body responds across hard efforts and recovery periods during high-intensity sessions.
Open Session
Use a brief session to review breathing response, oxygen use and heart-rate response at a selected pace or power, helping you judge the effort for an easier training day.
View O₂ pulse and ventilatory efficiency with the app’s metric scales. You or your coach interpret the live readings and decide how to adjust the session.
