Your trusted biological-age & aging-rate coach
Turn daily activity tracking into clear next-week actions and visible improvements in your biological age.
Santrai transforms your health data into actionable insights and measurable progress
Clarity & focus through a single north-star metric. Multi-device auto-sync (Apple Health/HealthKit/Oura/Garmin).
Progress you can feel with proof it's working. Adaptive 7-day plan that fits your life.
Effect-size attribution for each habit. Ranked levers with predicted impact
From first connection to your first experiment—all in minutes
Sync your last 30–90 days in one tap. All your health signals in one place.
Get your biological age and aging-rate with a transparent model card and confidence bands.
Choose 1–2 weekly experiments with the highest predicted impact for you.
Stop guessing and stressing, you are in control of your aging.
This week: sleep efficiency +0.8, late eating –0.4, zone-2 cardio +0.6. Clear attribution shows you exactly which habits matter most for your biology
Watch a single habit nudge your aging-rate, confirmed by a simple, shareable report. Share your wins with friends and stay accountable to your healthspan goals
One credible score with inputs and confidence explained
Ranked levers with predicted deltas, not generic tips
Day-by-day nudges that fit your calendar and travel
Weekly trendline + attribution = proof in 7–14 days
"Santrai helped me understand my biological age and make real changes. The weekly reports are incredibly motivating!"
"Finally, an app that gives me clear, actionable insights. I can see exactly what habits are working for me."
"The experiments feature is genius! I love seeing how small changes impact my overall health score."