SunSync
Align your day with
your natural rhythm
Your body already knows when to wake, move, and rest. SunSync connects you with sunlight to improve your energy, vitamin D, and sleep.
What SunSync tracks
Everything your circadian rhythm needs
Log your minutes of light, check the UV index, and discover your optimal sun windows throughout the day.
Personalised estimates based on your skin type and location. Track your daily supplements too.
Log your sleep, build routines to boost melatonin production, and reduce artificial light at night.
Personalised analysis, long-term history, and a home screen widget to keep everything at a glance.
See it in action
Designed around your day
Most people don't have a sleep problem.
They have a light problem.
Fix the light, and sleep follows.— The principle behind SunSync
The daily practice
Four moments that change everything
Morning light resets your internal clock and activates the day's energy.
Protect your peak solar exposure for vitamin D and maximum performance.
Dim screens and artificial lighting to let melatonin build naturally.
Full darkness so your body rests at the rhythm it was designed for.
Start today, for free
Available for iPhone. No subscription needed to get started.