Your Biological Operating System

Your day,
perfectly
calibrated.

Kairis aligns your daily actions with your circadian rhythm — so you focus when biology says focus, recover when biology says recover, and execute with precision from morning to night.

Download on the App Store
Kairis Circadian screen
Circadian Clock
Protocols for Life
Daily Mindfulness
Sustenance for Life
Circadian Clock

Your body has a schedule.
Now you can read it.

Metabolic panel
Metabolic Metrics
Hormonal panel
Hormonal Secretion
Restorative panel
Restorative Functions
Sleep & Wake panel
Sleep & Wake Cycle

Your body runs on a precise internal clock — a ~24-hour circadian cycle regulating hormones, body temperature, alertness, and sleep propensity. Kairis makes that cycle visible and actionable.

Track your performance metrics, hormonal secretion, physiological state, and sleep-wake cycle in real time — minute by minute. Paired with live external conditions: day length, UV index, animated moon phase, and time to sunrise and sunset.

To find out how Kairis calculates your circadian rhythm values, head over to our blog.

Kairis Protocols screen
Daily Protocols

Execute with biological structure.

Turn circadian insight into daily action. Each protocol maps directly to a specific phase of your day — morning focus, afternoon exercise, bedtime routine — following your internal clock and natural ultradian rhythms.

  • Nine circadian-mapped phases covering your full day
  • Fully customizable items per phase — breathwork, movement, focus, social
  • Recurring schedules with full calendar options
  • Toggleable local notifications per item
Kairis Mindfulness screen
Mindfulness System

Train your mind with precision.

Four pillars of deliberate mental practice — breathing, meditation, Yoga Nidra, and journaling — brought together in one seamless system for focus, recovery, and self-awareness.

  • 4 breathing protocols: Physiological Sigh, Box Breathing, Cyclic Hyperventilation, 4-7-8
  • Guided and unguided meditation — 1 minute to 1 hour
  • Yoga Nidra sessions for deep mindful rest and recovery
  • Custom audio: original music, nature sounds, binaural beats, ambient noise
  • AI-powered journaling prompts on supported devices (iOS 26+)
Kairis Sustenance screen
Sustenance Tracking

Tend to yourself, consistently.

Lasting wellbeing is the sum of what you consistently give yourself. Sustenance tracks the inputs that matter most — against daily goals with streak displays that keep you accountable.

  • Light exposure & sleep quality
  • Cardio & resistance exercise
  • Breathwork & meditation minutes
  • Social interactions & internal journaling

Mindfulness sessions completed in the app log automatically — your practice always counts.

Home Screen Widgets

Glanceable data,
always in reach.

Five widget groups surface your circadian metrics directly on your home screen — no app launch required.

Daily Performance
Alertness
Coordination
Reaction Time
Muscle Strength
Cardiovascular
Metabolic
Blood Pressure
Body Temperature
Heart Rate
Glucose Tolerance
Hormonal
Melatonin
Testosterone
Cortisol
Growth Hormone
Restorative
Pulmonary Function
Sleep Propensity
Bowel Movement
Sleep & Wake
Sleep Cycle
Cycle Stage
Time to Wake
Time to Bed
Kairis Widgets screen
Free to start

Live in sync
with your biology.

Download Kairis and bring structure, intention, and precision to every hour of your day.

Download on the App Store