AeroCardia

AeroCardia is a Montréal-built sports technology brand making portable respiratory sensing accessible to everyday endurance athletes. Founded by engineer and ultramarathon runner Matthew Behr and cardiologist Dr. Abhinav Sharma, the company aims to bring meaningful cardiorespiratory fitness data beyond the clinic and laboratory.

Its flagship ARO2 device is a wearable VO2 and breath sensor for runners, cyclists and other fitness-focused users. A soft mask, head strap and sensor pod clip on for training, while the companion app connects via Bluetooth to display live oxygen uptake, ventilation and respiratory exchange ratio (RER). AeroCardia presents these measurements as real-time wellness and fitness guidance, not medical diagnosis.

The platform also supports workout reviews, long-term VO2 tracking and phased training, helping users build an aerobic base, assess progress and prepare for events. The device is designed for road, trail and bike sessions, with automatic calibration and Bluetooth and ANT+ connectivity noted on the site