Your cortisol, all day long.
The Auromone Curve is a wearable cortisol sensor that reads the hormone behind your energy, sleep, and stress continuously, from the sweat on your wrist. No needles. No lab.
You know the feeling.
You've never seen the cause.
Cortisol is the stress hormone behind your energy, your sleep, and your focus. It rises and falls all day long, hour to hour. Yet almost no one has ever watched their own.
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Wired at midnight
Lying awake with a racing mind, long after you wanted to be asleep.
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Flat by mid-afternoon
The crash that no second coffee ever really seems to fix.
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Tense for no reason
On edge in a calm room, with nothing you can quite point to.
Every one of these is your cortisol moving. None of it shows up on your ring, your watch, or a once-a-year blood test.
Meet the Curve.
Watch a day appear.
The Auromone Curve is a continuous cortisol monitor and stress hormone tracker: a slim wearable sensor that reads the hormone from the sweat on your wrist, about 720 times a day. It maps your readings against the normal daily cortisol rhythm, so you see every point that falls in range, and every one that doesn't.
- Reads the actual cortisol molecule, not a heart-rate guess like Oura or Whoop.
- Continuous, around the clock, not a once-a-year lab test.
- On your wrist. No needles, no lab, no saliva kit in the mail.
Three steps, then you forget it's there.
No needles. No lab visits. A wearable cortisol sensor measures cortisol from sweat while you get on with your day.
Wear it
A slim, water-resistant band you can keep on day and night, through the shower and the gym.
It reads
The sweat sensor measures cortisol from your wrist about 720 times a day. No needles, no finger pricks.
You see
Your cortisol curve appears live in the app, mapped against your normal range and explained in plain words.
A swappable sensor reads for 14 days, then snaps out for a fresh one. See the 14-day cortisol sensor →
Most wearables guess. The Curve measures.
Your ring estimates stress from your heart rate, a stand-in for the hormone. The Auromone Curve is a wearable that measures cortisol directly, reading the actual molecule from the sweat on your wrist. It is the difference between reading the thermometer and guessing the temperature from how people are dressed.
See how the cortisol wearables compareMost wearables
Oura · Whoop · Apple Watch- Estimate stress from your heart rate
- A proxy signal, not the hormone
- A stress score, now and then
Auromone Curve
Continuous cortisol- Reads the actual cortisol molecule
- Straight from the sweat on your wrist
- 720 readings a day, around the clock
Lab-grade, on your wrist.
We publish how it works, built on decades of research from Hans Selye's first description of stress to today's sweat sensors. Curve is a general wellness device under Health Canada and FDA guidance, on a Class II pathway as the clinical data matures.
Read the full scienceYour whole day, in your pocket.
See the rise, the fall, and the recovery. Scrub back through any moment of your last 24 hours, and watch the pattern build across weeks.
- Today. Your live cortisol curve, hour by hour.
- Trends. Track your cortisol levels across days and weeks.
- Plain language. What each rise and dip means, in context.
On iPhone and Android.
Live now
7-day trend
Buy the band once. Multiple biomarkers as we evolve.
The Curve reads each hormone from a small sensor that snaps into the band. Cortisol ships first. As we release new sensors, the same wristband starts reading more of the chemistry that drives how you feel, with no new hardware to buy.
Cortisol
Shipping first • Q4 2026The stress hormone behind your energy, sleep, and focus.
See the cortisol sensorTestosterone
PlannedTracks drive, recovery, and how well you bounce back.
Estradiol
PlannedFollows your cycle, mood, and energy across the month.
Melatonin
PlannedShows when your body is really ready to wind down.
Be one of the first 500.
500 units ship in Q4 2026 at founder pricing. We charge when your Curve ships, never before.
No deposit. No spam. Leave any time.
Prices shown are target prices and may differ from the final sale price.
Good questions.
How is this different from a Whoop or Oura?
Whoop and Oura guess at cortisol from your heart rate, a signal that barely tracks the real hormone. Curve reads the actual cortisol, from sweat. In our bench testing it stayed within about 8% of a lab blood test over 14 days of wear, about as close as the glucose monitors people with diabetes trust.
Is sweat cortisol the same as blood cortisol?
Sweat carries the same free cortisol fraction as a blood draw, the bioactive form your body responds to. In bench testing, Curve's readings stayed within about 8% of a serum lab reference over 14 days of wear.
Is Auromone Curve a medical device?
Curve is a general wellness device under Health Canada and FDA guidance. It monitors continuously; it does not diagnose. We're pursuing Class II registration as the data matures. Your data is yours: encrypted, never sold, exportable.
How much does it cost, and when does it ship?
The band is CA$349 founder pricing, locked from CA$599 retail, first 4-pack of sensors included. Sensors are CA$29 per 4-pack after that. The first 500 units ship in Q4 2026; reserving is free and we only charge when your Curve ships.
What about other hormones?
Cortisol ships Q4 2026. Testosterone (Q2 2027), estradiol (Q4 2027), and melatonin (2028) follow on the same band with a new sensor module. Founder members get priority access to each one.
What is a continuous cortisol monitor?
A continuous cortisol monitor reads your cortisol around the clock, instead of capturing one number in a lab. The Auromone Curve does this from the sweat on your wrist, taking about 720 readings a day and mapping them against your normal daily rhythm, so you see the rise, the fall, and the recovery as they happen.
Is there a wearable that measures cortisol?
Yes. The Auromone Curve is a wearable that measures cortisol directly, reading the actual hormone from the sweat on your wrist. Most rings and watches only estimate stress from your heart rate; the Curve measures the cortisol molecule itself, continuously.