The Sunlight App

Your light is personal.

With awareness and balance, you can restore health, improve sleep, and live in rhythm with the world that gives us life. Find today's UVB window and step into the sun with confidence.

Find today's UVB window

Enter your details to personalize the window for safe, effective sunlight.

Works worldwide. Example: “Austin, TX”, “Paris”, or “90210”.

Today's UVB window(s)

Submit your inputs to see the recommended window.