Features · Baku

Sleep

Understand your sleep at a biological level

Most apps tell you how long you slept. Baku tells you what that sleep actually did for your body — analyzing your full sleep architecture, how efficiently you cycled through stages, and how your patterns shift over time.

Sleep Architecture
Deep, REM, light, and awake stage breakdown with trend analysis
Sleep Efficiency
Time asleep vs time in bed, with personalized baseline comparison
Circadian Alignment
How consistently your sleep timing aligns with your natural chronotype
Overnight HRV
Heart rate variability during sleep as a window into nervous system recovery

Recovery

Know when to push and when to rest

Baku builds a personalized model of your recovery baseline using your historical data, then scores each day relative to your own norms — not population averages.

Personalized Recovery Score
Daily readiness calibrated to your individual baseline
HRV Trending
Short and long-term HRV trends to detect accumulated stress or fatigue
Resting Heart Rate
Continuous tracking as a key cardiovascular recovery marker
Load vs. Recovery
Activity load mapped against recovery capacity to guide training decisions

Longevity

Optimize for the long game

Baku tracks the markers research associates with healthspan: cardiovascular efficiency, autonomic balance, sleep quality consistency, and recovery trajectory over time.

Healthspan Score
A composite metric tracking your key longevity markers over time
Autonomic Balance
Sympathetic vs. parasympathetic balance derived from HRV data
Cardiovascular Fitness
VO2 max estimation and aerobic efficiency trends
Long-Term Trends
Monthly and yearly views to reveal patterns invisible in daily data

Integrations

Your data, wherever it lives

Garmin Connect
Apple HealthKit
Oura — Coming Soon
Whoop — Coming Soon

Why Baku is Different

Personalized Baselines

Every metric calibrated to your individual history, not population averages.

Science-Backed

Analytics grounded in peer-reviewed sleep, HRV, and longevity research.

Privacy First

Your health data is never sold or shared. It exists to serve you only.