Sun Day, a new app by Jack Dorsey, monitors sun exposure and vitamin D levels using location data to provide the UV index, cloud coverage, and times for sunrise and sunset. Users select their skin type and clothing to determine safe sun exposure durations. The app also logs vitamin D intake during sun exposure sessions. Future updates are planned to incorporate additional user data for improved accuracy. The app aims to attract Gen Z, who shows increased interest in tanning despite growing concerns about skin health.
Sun Day tracks sun exposure and vitamin D levels, providing real-time UV index, temperature, and safe sun exposure duration based on user-selected skin type and clothing.
The app calculates vitamin D intake during outdoor activities, offering future updates that may include height, weight, and blood vitamin D levels for more accurate tracking.
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