Sunlight is Life App
A comprehensive circadian health platform designed to help you optimize your relationship with sunlight through personalized daily schedules, UV monitoring, and solar clock visualization.
Key Features
Real-Time Sun Position Tracking
Know exactly where the sun is at any moment with our interactive solar clock visualization. See the sun's path across the sky and plan your day around optimal light exposure times.
Personalized Circadian Schedules
Get daily recommendations based on your location and the sun's position. Our "My Circadian Day" feature provides science-backed timing suggestions for light exposure, meals, exercise, and sleep preparation.
UV Monitoring & Vitamin D Calculator
Track UV levels throughout the day with forecasts tailored to your skin type. Our vitamin D calculator estimates how much vitamin D you're producing based on your exposure time, skin type, and current UV conditions.
Safe Sun Exposure Guidance
Receive personalized recommendations for safe sun exposure based on your Fitzpatrick skin type, current tan level, and real-time UV measurements. Know exactly how long you can be in the sun without burning.
Solar Clock Visualization
A beautiful interactive representation of the sun's daily path. Watch the sun move across the sky in real-time, see twilight phases, and understand how daylight changes throughout the year.
Works Offline
Install as a Progressive Web App (PWA) on any device. The app works without an internet connection, so you always have access to your solar data.
Subscription Tiers
Free
Access basic solar events, sunrise/sunset times, and the solar clock visualization without creating an account.
Subscriber (Free with Account)
Create a free account to unlock location search, saved locations, the vitamin D calculator, UV personalization, and the My Circadian Day personalized schedule.
Premium ($2/month)
Get real-time UV data, extended forecasts, unlimited saved locations, calendar date selection, printable solar clock PDFs, and settings sync across all your devices.
Getting Started
- Visit the app at app.sunlightis.life
- Allow location access for accurate solar calculations
- Explore free features like the solar clock and UV information
- Create a free account to unlock subscriber features
- Go premium for the complete experience