CORE BY PEAKVO₂
CORE is a portable breath analyzer for VO₂ max, resting metabolism, and more - with clear reports and personalized training and nutrition guidance.
Expected U.S. launch: December 2026.
Get launch updates and a special launch discount. Discount details announced at launch. No payment required.
For Professionals
Measure and improve outcomes
For Athletes
Make training more effective
For Everyone
Stay fit for life
THE CORE APP
Results you can train with.
Every assessment includes a shareable snapshot. Subscriptions include full reports with personalized training zones, recommended time in each zone, and calorie and macro targets.
WHY CORE
What your breath reveals.
CORE Analyzes how your body consumes oxygen (O2), produces carbon dioxide (CO2), and airflow to understand how your body uses fuel, responds under increased physical demands, and how your cardiovascular, respiratory and metabolic systems perform.
Aerobic Fitness
PeakVO₂
Peak Fat Oxidation
Highest rate of fat use
Fuel Use
Fat vs carbohydrate use across a range of intensity
Exercise Economy
Oxygen needed at a given pace or power
Resting Metabolism
Energy burned at rest
Personalize Nutrition
Measure resting metabolism and get calorie and macro targets based on your goals and activity.
Guide Training
Assess peak VO₂, ventilatory thresholds, peak fat oxidation, exercise economy, and more.
Use your results to guide training and track progress.
HOW CORE WORKS
Connect. Assess. Review.
PeakVO₂ CORE makes metabolic testing simple enough to use outside of a traditional lab. Connect the device, choose the assessment that matches your goal, and follow the guided process in the app. Your results are available immediately, giving you a clear snapshot of your current physiology, and subscriptions include deeper reporting and personalized guidance.
WHO IS IT FOR
For your clients.
For your training.
Understand what CORE measures.
CORE measures oxygen, carbon dioxide and airflow. See how those measurements become insights into fitness, fuel use and resting metabolism.
MEET CORE
Small device. Serious metabolic insight.
CORE brings breath-by-breath metabolic testing into a compact, mask-mounted system designed for real-world use. Lightweight, portable and connected to the PeakVO₂ app, it gives athletes and professionals access to meaningful physiological data without the footprint or cost of a traditional metabolic cart.
CORE KITS & APP PLANS
Choose your CORE setup.
Choose the hardware kit that fits how you’ll use PeakVO₂, then select the app plan that gives you the level of reporting and guidance you need.
choose your core kit
BEST FOR INDIVIDUALS
Single-device kit
Everything you need for personal metabolic testing with one CORE device.
INCLUDES
1 CORE device
1 Hans Rudolph mask
1 Polar Verity Sense heart-rate monitor
1 reusable hygiene barrier filter holder
50 hygiene barrier filters
BEST FOR COACHES & GYMS
Two-device kit
A complete two-device CORE setup for coaches, gyms and professionals testing multiple athletes or clients.
INCLUDES
2 CORE devices
2 Hans Rudolph masks
2 Polar Verity Sense heart-rate monitors
2 reusable hygiene barrier filter holders
100 hygiene barrier filters
U.S. shipping included with both CORE kits.
Contact Us
CORE brings O₂ + CO₂ measurement and breath-by-breath analysis into a compact, mask-mounted system designed for real-world testing - without the tubing, wheeled cart, and dedicated computer required by many conventional metabolic cart setups.
Analyzer
170 g (6.0 oz) device (Excludes Mask)
Connection
Mask-mounted; no tube to cart
Display
Mobile device
Equipment Footprint
Wearable device + mobile app
Analyzer
Analyzer housed on cart
Connection
Mask connected to cart by tubing
Display
Computer on cart
Equipment Footprint
Mask + tubing + wheeled cart
CORE is designed to provide a broader metabolic picture than a VO₂-only device, including oxygen and carbon dioxide measurement, RER, resting metabolism, ventilatory thresholds and live metabolic data across exercise and rest.
| Feature | PeakVO₂ CORE | VO₂ Master | SpiroFit | COSMED K5 | PNOĒ |
|---|---|---|---|---|---|
| Relative price | $ | $$ | $$$ | $$$ | $$$ |
| O₂ + CO₂ analysis | ✓ | — | ✓ | ✓ | ✓ |
| Measured VCO₂ | ✓ | — | ✓ | ✓ | ✓ |
| Measured RER during exercise | ✓ | — | ✓ | ✓ | ✓ |
| Measured RER at rest | ✓ | — | ✓ | ✓ | ✓ |
| Resting metabolic results | ✓ | Limited | ✓ | ✓ | ✓ |
| VT1 / VT2 reports | ✓ | Limited | ✓ | ✓ | ✓ |
| Mobile testing software | iOS + Android | iOS + Android | iOS | PC / onboard | Mobile app |
ABOUT PEAK
VO₂
Objective measurement unlocks human potential.
We make metabolic testing personal, portable, and actionable, helping people train smarter and build fitness for life.
Our Values:
Put people first.
Earn trust through evidence.
Act on what matters.
Keep improving together.
