Vitamin D: Sun & UV Tracker
Bryan Johnson Blueprint Sync
About
This app personalizes your sun exposure to optimize vitamin D production and prevent sunburn. It uses your location, skin type, and real-time atmospheric data to determine the best times to be in the sun and when to cover up. Integrates with Apple Health and Apple Watch for seamless tracking.
What's New in Vitamin D
1.2
June 25, 2026
New in this version: - Smart Sun Safety: clear guidance on when to catch sun and when to cover up, from your very first day. - Solar window alerts: a nudge when conditions are good for vitamin D where you are. - Vitamin D reserve: see your level fill up like a battery through the day. - Insights you can swipe: daily and long term views of your sun and supplement intake. - Live session tracking and a smoother Apple Watch experience. - More reliable Apple Health sync and more accurate readings. Thank you for the reviews and feedback. Please keep it coming.
MoreSubscription plans
Premium Yearly
Best value: full year of solar insights.
Developer apps
FAQ
Does Vitamin D have ads?
No, Vitamin D is ad-free. The app is designed to provide a clean and quiet experience focused solely on your data.
What are the subscription options for Vitamin D?
Vitamin D offers a Premium Weekly subscription for $4.99 and a Premium Yearly subscription for $149.99. These plans likely unlock additional features or content.
How accurate is Vitamin D's UV index calculation?
Vitamin D uses astronomy and live atmospheric data, including sun angle, ozone density, and air clarity, for precise UVB estimation at your GPS location, going beyond generic UV index readings.
Can I use Vitamin D on my Apple Watch?
Yes, Vitamin D is built for Apple Watch with features like window complications for your watch face, haptic alerts for optimal sun times, and live progress tracking.
Does Vitamin D integrate with Apple Health?
Yes, Vitamin D integrates with Apple Health. Your vitamin D from the sun and time spent in the sun are automatically logged, providing a complete picture for your other health apps.
Is Vitamin D suitable for all skin types and locations?
Yes, Vitamin D is designed to be personal by considering your skin type (Fitzpatrick scale) for burn avoidance and is accurate anywhere on Earth, with special attention to northern regions and short winter days.
How often is Vitamin D updated?
The latest version of Vitamin D is 1.2, and it was last updated on June 25, 2026. This indicates a recent update and ongoing development.
What is the age rating for Vitamin D?
Vitamin D has an age rating of 4+. This suggests it is suitable for a wide range of users, including children, with no mature content.