Hack the Sun.
Transforming public spaces into interactive wellness journeys
Sundial Health turns parks, campuses, and plazas into time-responsive health destinations. Shadow-based wayfinding guides you through personalized 15-20 minute sun exposure routes based on real-time UV index, time of day, and your skin type.
The Experience
✨ Your Shadow Becomes Your Guide
You step into a park at 2pm and see your shadow cast onto a dynamic pathway of light that literally guides your walk—each step illuminates at the perfect pace. As you move, you're not just taking a stroll, you're actively synthesizing vitamin D. The path lights up green when you've hit optimal exposure, and your phone buzzes with your exact vitamin D gain: "You just generated 10,000 IU worth of vitamin D—your daily goal achieved in 18 minutes."
You feel like you've hacked the sun.
How It Works
Real-Time Sun Tracking
Smart signage tracks the sun's position and UV index throughout the day, calculating optimal exposure windows.
Personalized Profiles
Your skin type determines exposure recommendations—from very fair to dark, everyone gets optimal vitamin D safely.
Shadow Wayfinding
Follow your shadow through illuminated pathways that guide you to the perfect sun exposure zones.
Vitamin D Tracking
Track your daily IU generation, view weekly trends, and integrate with Apple Health for complete wellness data.
Ready to Optimize Your Sun?
Join thousands who are transforming their daily walks into personalized wellness journeys.
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