Portable VO2 & Breath Sensor

Real-time guidance
for every run & ride.

Clip on, breathe like you always do, and go. AeroCardia reads your oxygen uptake, ventilation and effort live — real data for your endurance training, in every session.

Join the waitlist arrow_forward bolt Pre-order now play_circle See how it works

verified_user For general wellness and fitness use.

Telemetry HUD // v3.4

From your last session

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BLE 5.2 & ANT+ CONNECTED

battery_charging_90 98%

VO2 Live Peak

44.1 ml O2/kg/min

Steady effort

Minute Ventilation

96 L/min

Steady breathing

Live RER

0.98 CO2/O2

Mixed effort zone

Threshold Held

52:00 min:s

Sustained effort

graphic_eq EXPIRATORY GAS EXCHANGE OSCILLATION 2.4 Hz Live

insights Instantaneous VE: 96.4 L/min | FiO2/FeO2 Δ: 4.8% | Cadence: 14 bpm

Backed By

Marathon Pacing

Gran Fondo Power

Healthspan & Longevity

Trail & Ultra

Triathlon Base

What You Get

Personalised run & ride training. Powered by the best data.

Effort feels the same on a good day and a bad one. AeroCardia tells you what your whole system is doing — how much oxygen you are actually using, and how close you are to your ceiling.

01 // TELEMETRY tune

Real-time guidance

Live VO2, ventilation and RER stream to the AeroCardia app over Bluetooth — see exactly what your engine is doing, breath by breath, on every hill and interval.

LIVE, BREATH BY BREATH STREAMING

44.1 VO2 ml O2/kg/min

96 VE L/min

0.98 RER

check_circle Live oxygen & breathing feedback
check_circle Measured, not estimated
check_circle Works on the road, trail and bike

02 // PROGRESSION stacked_line_chart

Train in phases

Build an aerobic base, test where you are, then sharpen for race day. Each session becomes feedback: was that aerobic, or did you drift?

12-Week VO2 Peak Curve +6.4 ml/kg

Week 4 Base: 48.1 ml/kg/min (+1.2)

Week 8 Test: 51.2 ml/kg/min (+3.8)

Week 12 Peak: 54.5 ml/kg/min (+6.4)

Base Block Test Block Peak Sharp

check_circle Foundation, test and peak blocks
check_circle Session review after every workout
check_circle VO2 max tracked as a long-term trend

03 // RESPIRATORY local_fire_department

A real effort signal

RER shifts in real time as effort climbs — an honest, breath-by-breath read on how hard you're working, from warm-up through the finish.

■ Live RER 0.98

Aerobic Mixed Anaerobic

check_circle Live RER as an effort indicator (validation in progress)
check_circle Track how it shifts across a session
check_circle Useful from a 10k to a gran fondo

Setup

Clip it on in seconds and go.

memory ARO2

Soft mask • Head strap • Sensor pod

A soft cup seals over your mouth, a light strap holds it, and the sensor pod does the rest. No mouthpiece to bite, no cart of gas analysers — auto-calibration accounts for every air parameter automatically, each time you put it on.

bluetooth_connected

Instant Universal Sync

Pairs directly with our app via Bluetooth.

How the sensing works arrow_forward

From The Blog

Train in phases. Peak when it matters.

Raising VO2 max is not about going hard every day. It is about building an aerobic base, testing where you are, then sharpening for the event that counts.

PHASE 01 BASE VOLUME

Foundation

Easy-paced volume that grows your aerobic engine. AeroCardia keeps you genuinely easy so you never drift past your metabolic ceiling prematurely.

Zone 2 Target 70% Session Vol

Aerobic efficiency baseline

PHASE 02 RAMP PROTOCOL

Test

A structured ramp protocol tracks your oxygen use as effort climbs and automatically updates your training targets.

Ramp Staircase +25W / 2 min

Automatic effort tracking

PHASE 03 ANAEROBIC SHARP

Peak

Short intervals targeted directly at VO2 max ceiling, timed to preserve recovery so you sharpen race fitness without digging a metabolic hole.

Interval Spikes 95-100% VO2 Max

Neuromuscular & central adaptations

Read: How to improve your VO2 max arrow_forward

Championship Edition

Sport your team's colours.

Express your country with enthusiasm. Match your sensor to your national colours — for race day, for your club, or just to fly your own flag.

// Global Roster 17 nations

Why AeroCardia

Real insight into your engine.

Understanding how your body uses oxygen has always meant an appointment, a mask, and a metabolic cart most people will never have access to. We think that gap shouldn't exist for anyone chasing a PR, or just trying to stay active and strong for years to come.

It started when Matthew Behr, a McGill-educated engineer, and Dr. Abhinav Sharma, a practicing cardiologist, kept running into the same wall: measuring how the body uses oxygen outside of a lab was extremely difficult, and real fitness data lived exclusively behind specialized equipment and a technician's appointment book. AeroCardia is what happens when two people decide that gap doesn't need to exist.

AeroCardia sensor pod in Québec fleur-de-lis colourway

Proudly built in Montréal, Québec

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Innovation

We build with the latest sensing and signal-processing technology, so the device keeps getting smarter with every session it reads.

verified

Scientific Rigor

Built on established exercise physiology principles, so the numbers on your screen are grounded in real science.

diversity_2

Empowerment

We design for everyday athletes first, so understanding your engine is never locked behind a lab appointment.

Our Team

Built by people who use it.

Matthew Behr, P.Eng

Chief Executive Officer

A McGill-educated engineer and ultramarathon runner, Matthew has spent his career bringing ambitious health technology to market — and is building AeroCardia to put the numbers elite athletes chase within reach of everyday runners and riders.

Dr. Abhinav Sharma, MD, PhD

Chief Medical Officer

An award-winning cardiologist and clinician-scientist, Abhinav brings the same scientific rigor used in cardiovascular research to a device built for daily training, not diagnosis.