Jack Dorsey’s Sun Day App Helps Track UV and Vitamin D
Track sun exposure and vitamin D with Jack Dorsey’s new Sun Day app. Smart, personalized UV tracking based on your skin type.
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Jack Dorsey’s Sun Day App Helps Track UV and Vitamin D Jack Dorsey Launches a Smart Sun Exposure Tracking App If you've ever wondered how long you can safely stay in the sun or how much vitamin D you're actually getting, Jack Dorsey's new sun exposure tracking app , Sun Day , is designed to answer exactly that. Launched shortly after his minimalist chat app Bitchat, Sun Day is the Twitter co-founder’s latest foray into wellness technology. The app is now available through TestFlight on iOS and offers open-source access on GitHub for developers who want to experiment or expand on its functionality. At a time when tech users are more health-conscious than ever, Sun Day provides a useful and personalized way to monitor UV levels, prevent sunburns, and track vitamin D intake—factors increasingly linked to immunity, mood, and overall wellness. Image Credits:Eva Marie Uzcategui/Bloomberg / Getty Images How the Sun Day App Tracks Your UV Exposure and Vitamin D What makes Sun Day more than just another weather or UV index app is its persona…