Vitamin D Production
See when the sun is strongest enough to support natural vitamin D production.
Turn sunlight into your daily health advantage.
VitalSun shows you how the sunlight around you can support your health — when to get outside, how long to stay out, and tracks your exposure so you stay consistent.
A Sun Exposure Routine For Your Health Goals
★★★★★ 5.0 on the App Store
★★★★★
The BEST health app by a mile
“It’s taken one of the most important parts of your health and made it incredibly easy to understand and use. It has improved my knowledge and my health.”
★★★★★
Finally a light app that actually gets it
“Easily the best light optimization app I’ve used. The custom daily plan makes everything feel personalized instead of generic — and it genuinely wants to help you understand light, not fear it.”
★★★★★
Personalized to your skin
“Easily useable, very personalized — the best app to optimize sun exposure for your individual skin tone.”
The problem
Sunlight is powerful.
Sunlight is powerful.
Most people waste it.
Most people spend too much time indoors. And when they do get sun, they usually have no idea what time is best, how long to stay out, or how it is helping them.
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Most people do not get outside enough
Work, screens, and busy days keep people indoors. Sunlight becomes something they get by accident, not on purpose.
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People think all sunlight is the same
Morning, midday, and sunset light are different. But most people do not know how to use each part of the day to their advantage.
- 03
People track everything except sunlight
People track calories, workouts, steps, and sleep. But they rarely track time outside, so it is easy to stay inconsistent.
The solution
Your personal guide to smarter sun exposure.
VitalSun shows you when to go outside, how long to stay out, how the sun around you may support your health, and how your light habits are improving over time.
Live Sun Insights
See live sunlight data for your area, so you know how today's light can support your health.
Personalized Sun Exposure Plan
Get a simple sun exposure plan based on your goals, location, and daily schedule.
Sun Exposure Tracking
Track your time outside, see your progress, and stay consistent with your sunlight routine.
Built for the health benefits you care about.
VitalSun helps you build better sunlight habits around the health benefits that matter most to you, with simple guidance and tracking.
Sleep
Support your body's natural day-night rhythm with better sunlight habits.
Energy
Use daily sunlight to help your body feel more awake, alert, and ready for the day.
Mood
Spend more time in natural light to support a better mood and a clearer mind.
Better Sunlight Exposure Consistency
Track your time outside so sunlight becomes a real habit.
Powered by your local light environment.
VitalSun combines live sunlight data with science-backed guidance for your goals, helping you understand your light environment, plan your outdoor time, and stay consistent.
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Live Local Sun Data
See live sunlight data for your exact area, adjusted for your location, time of day, and current weather.
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Science-Backed Timing
VitalSun uses science-backed light guidance to suggest when to get outside and how long to stay out based on your goals.
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Sun Exposure Tracking
Log your time outside, and VitalSun turns each session into simple data and insights you can review.
For anyone who wants to use sunlight better.
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You want to get more sunlight
For people who spend too much time indoors and want a simple way to get outside more often.
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You have a health goal
For people who want to use sunlight to support goals like sleep, energy, mood, vitamin D, or consistency.
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You want a simple plan
For people who do not want to guess when to go outside, how long to stay out, or whether they are staying consistent.
FAQ
Questions people usually ask.
What does VitalSun actually do?
VitalSun helps you understand the sunlight in your area, know when to go outside, and track your sun exposure over time.
Is VitalSun medical advice?
No. VitalSun is not medical advice and does not diagnose, treat, cure, or prevent any disease. It is a sunlight habit and education tool.
Why does VitalSun need my location?
Your location helps VitalSun show sunlight data for where you are, including weather, time of day, and local sun conditions.
Do I need to know anything about light or circadian rhythm?
No. VitalSun is made to be simple. You do not need to understand the science to use the app.
What health goals can VitalSun help support?
VitalSun is built around goals like sleep, energy, mood, vitamin D production, and better sunlight exposure consistency.
Get the app
Start building better light habits.
Use the sun with more intention, more consistency, and more confidence.