Every biomarker, explained in plain English.
A single face scan surfaces 90 signals across ten areas of your health. Here is what each one means, and how strong the evidence behind it is.
Heart & Pulse
Your cardiac rhythm and circulation, read straight from the pulse in your skin.
Heart rate
Clinically validatedHow many times your heart beats per minute, the most fundamental sign of how your cardiovascular system is doing right now.
Resting heart rate
Clinically validatedSorts your calm, at rest pulse into ranges so you can see whether it sits in the athletic, healthy, or elevated zone.
Clinical heart rate (fingertip)
Clinically validatedA higher precision pulse reading taken by resting your fingertip on the camera for lab grade accuracy.
Palm heart rate
Clinically validatedMeasures your pulse from the blood flow in your palm as an alternative to a face scan.
Peripheral perfusion index
Clinically validatedShows how strongly blood is reaching your fingertips, a quick read on circulation to your extremities.
Blood perfusion map
Wellness insightA visual map of how evenly blood is flowing across the surface of your face.
Pulse irregularity index
Clinically validatedFlags when the gaps between heartbeats look uneven, which can hint at an irregular rhythm worth checking.
Carotid pulse visualization
Emerging researchDetects the subtle skin movement caused by the large artery in your neck with each beat.
Heart Rate Variability
The tiny timing shifts between beats that reveal how adaptable and recovered you are.
SDNN
Clinically validatedThe overall amount of natural variation between your heartbeats, a broad indicator of resilience.
RMSSD
Clinically validatedThe quick beat to beat changes tied to your rest and recover nervous system, a favorite recovery marker.
pNN50
Clinically validatedThe percentage of neighboring heartbeats that differ noticeably, another window into relaxation.
SDSD
Clinically validatedCaptures the short term wobble between consecutive beats, closely related to your calming nervous system.
Mean NN interval
Clinically validatedThe average time between heartbeats, the raw timing all other HRV numbers are built from.
LF power
Clinically validatedReflects the slower rhythms in your heartbeat that blend both stress and recovery systems.
HF power
Clinically validatedReflects the faster rhythms tied mainly to your breathing and your body's calming response.
LF/HF ratio
Clinically validatedCompares your stress related and recovery related rhythms to gauge whether you lean tense or relaxed.
Total power
Clinically validatedThe combined size of all the rhythms in your heartbeat, a summary of nervous system activity.
Poincaré SD1 / SD2
Wellness insightGeometric measures of your short and longer term beat variability, mirroring recovery and balance.
Sample entropy
Emerging researchRates how complex your heartbeat pattern is, where healthy hearts tend to show rich complexity.
Breathing & Blood Oxygen
Respiration and oxygen signals, without a finger clip or mask.
Respiratory rate
Clinically validatedHow many breaths you take per minute, detected from the tiny rhythmic changes a breath causes in your face.
Respiratory regularity index
Clinically validatedMeasures how steady and even your breathing rhythm is over the scan.
Respiratory waveform
Clinically validatedDraws the actual shape of your breath cycle so you can see your inhale and exhale pattern.
Blood oxygen (SpO₂)
Emerging researchEstimates the percentage of your blood carrying oxygen, a key vital sign for lung and circulation health.
Blood oxygen (fingertip)
Clinically validatedA more precise oxygen reading taken through your fingertip on the camera.
Breathing rate variability
Wellness insightTracks how much your breath timing shifts from one breath to the next.
Tidal volume estimate
Wellness insightApproximates how much air you move with each normal breath.
Inspiratory capacity estimate
Wellness insightEstimates the largest breath you could draw in, a rough gauge of lung capacity.
Cardiovascular & Vascular
Blood pressure, vessel health, and the signals behind long term heart risk.
Systolic blood pressure
Emerging researchEstimates the peak pressure in your arteries when your heart pumps, the top blood pressure number.
Diastolic blood pressure
Emerging researchEstimates the resting pressure in your arteries between beats, the bottom blood pressure number.
Mean arterial pressure
Emerging researchThe average pressure across a full heartbeat, a measure of how well blood reaches your organs.
Pulse pressure
Emerging researchThe gap between your top and bottom numbers, which can reflect the stiffness of your arteries.
Atrial fibrillation probability
Wellness insightEstimates the likelihood your rhythm shows signs of AFib, a common irregular heartbeat.
AFib screening (fingertip)
Clinically validatedA higher accuracy fingertip check for the irregular rhythm pattern of atrial fibrillation.
Vascular age
Wellness insightCompares the apparent condition of your vessels to typical ages, telling you if your arteries seem younger or older.
Pulse wave velocity
Emerging researchEstimates how fast your pulse travels through your arteries, where faster speeds suggest stiffer vessels.
Arterial stiffness index
Emerging researchRates how flexible or rigid your arteries appear, which matters for long term heart health.
10 year cardiovascular risk
Wellness insightCombines several signals into an estimate of your heart disease risk over the coming decade.
Cardiac output estimate
Emerging researchApproximates how much blood your heart pumps each minute.
Stress & Nervous System
How activated or recovered your autonomic nervous system is right now.
Composite stress score
Clinically validatedA single overall stress rating blended from several heartbeat and physiological signals.
Stress level category
Clinically validatedPlaces your current stress into easy to read bands like low, moderate, or high.
Baevsky stress index
Clinically validatedA well established heartbeat based formula that measures how hard your stress system is working.
Sympathetic (SNS) activity
Wellness insightEstimates the activity of your fight or flight nervous system, which ramps up under pressure.
Parasympathetic (PNS) activity
Wellness insightEstimates the activity of your rest and digest nervous system, which helps you calm and recover.
Autonomic balance index
Wellness insightShows whether your stress and recovery systems are in healthy balance or tipped to one side.
Respiratory sinus arrhythmia
Wellness insightMeasures the natural way your heart rate rises and falls with your breathing, a sign of a relaxed state.
Baroreflex sensitivity
Emerging researchAssesses how well your body automatically adjusts blood pressure and heart rate.
Facial tension score
Emerging researchReads visible muscle tension in your face as a physical cue of stress.
Metabolic & Body
Body composition and metabolic signals estimated from facial and body cues.
Body mass index
Clinically validatedYour weight to height ratio estimated from facial and body proportions.
Body fat percentage
Clinically validatedEstimates the share of your body made up of fat tissue.
Basal metabolic rate
Clinically validatedApproximates how many calories your body burns at complete rest just to keep you alive.
Waist to hip ratio
Clinically validatedEstimates how your body distributes fat, where more around the waist carries higher risk.
Visceral fat index
Clinically validatedEstimates the deep belly fat around your organs, the type most linked to metabolic disease.
Body water estimate
Clinically validatedApproximates the proportion of your body made up of water.
Blood glucose estimate
Emerging researchA camera based approximation of your blood sugar level, shown as early research.
Hemoglobin estimate
Emerging researchApproximates the oxygen carrying protein in your blood, relevant to anemia.
Metabolic syndrome probability
Emerging researchEstimates the chance you have the cluster of conditions that raise heart and diabetes risk.
Hydration index
Emerging researchA directional read on how well hydrated you appear to be.
Fitness & Recovery
Where your aerobic fitness sits and whether today is a training or rest day.
VO₂max estimate
Wellness insightApproximates the maximum oxygen your body can use during hard exercise, the standard measure of aerobic fitness.
Cardiac fitness age
Wellness insightTranslates your heart fitness signals into an equivalent age so you can see if your heart is younger or older.
Recovery score
Wellness insightRates how well rested and recovered your body appears, useful for deciding whether to train or rest.
Training readiness
Wellness insightCombines recovery and stress signals into a simple go or rest recommendation for your day.
Resting HR fitness class
Clinically validatedUses your resting pulse to place your cardiovascular fitness on a scale.
HRV fitness percentile
Wellness insightCompares your heart rate variability to others, where higher variability generally signals better fitness.
Heart rate recovery
Emerging researchEstimates how quickly your pulse settles after exertion, a strong sign of cardiovascular fitness.
Aging & Longevity
How old your body reads physiologically, which can differ from the candles on your cake.
Biological age estimate
Wellness insightEstimates how old your body seems physiologically, which can differ from your actual age.
Vascular age
Wellness insightEstimates the effective age of your blood vessels based on how they respond to each heartbeat.
HRV age
Wellness insightTranslates your heart rate variability into an age equivalent for your nervous system.
Skin health age
Wellness insightEstimates how old your skin looks based on texture, tone, and damage.
Aging pace
Emerging researchEstimates whether you appear to be aging faster or slower than an average pace.
Age gap score
Wellness insightShows the difference between your biological estimate and your real age in a single number.
Longevity risk score
Emerging researchBlends several markers into a broad, directional read on long term health trajectory.
Mental & Cognitive
Fatigue, focus, and mood cues drawn from your eyes and expression.
Fatigue score (PERCLOS)
Clinically validatedMeasures eyelid droop and eye closure patterns to detect tiredness, a method proven in driver safety research.
Drowsiness level
Clinically validatedRates how close you appear to falling asleep based on eye and face cues.
Blink rate
Clinically validatedCounts how often you blink, which shifts with fatigue, focus, and stress.
Emotional valence
Emerging researchEstimates whether your current expression leans positive or negative.
Emotional arousal
Emerging researchEstimates how energized or activated your emotional state appears.
Mental wellness score
Emerging researchA broad, directional summary of your emotional wellbeing from facial and physiological cues.
Cognitive load level
Emerging researchEstimates how mentally taxed or busy your brain appears to be, including from subtle pupil changes.
Attention level
Wellness insightGauges how focused and alert you seem during the scan.
Mood screening proxies
Emerging researchDirectional wellness estimates loosely modeled on standard mood questionnaires. Never a diagnosis.
Skin & Facial
A dermatology style read on tone, texture, and signs of aging.
Melanin index
Wellness insightEstimates the pigment level in your skin, useful for personalized skin and sun care guidance.
Redness (erythema) index
Wellness insightMeasures skin redness that can come from irritation, flushing, or inflammation.
Skin luminance score
Wellness insightRates how bright and radiant your skin appears.
Acne severity score
Wellness insightEstimates how much acne is present on a simple severity scale.
Sun damage / photoaging grade
Wellness insightEstimates visible signs of aging caused by sun exposure.
Skin texture score
Wellness insightRates the overall smoothness or roughness of your skin surface.
Pigmentation uniformity
Wellness insightMeasures how even your skin tone is across your face.
Dark circle intensity
Wellness insightRates the darkness under your eyes, often linked to sleep and fatigue.
Jaundice flag
Emerging researchScreens for a yellowish skin tint that can signal a liver issue, prompting you to see a doctor.
Suspicious lesion flag
Emerging researchHighlights a skin spot with features worth having a professional examine. Never a diagnosis.
