Sun Day: Jack Dorsey's new app helps you track sun exposure and vitamin D
Jack Dorsey launches Sun Day, an app that tracks UV exposure, vitamin D intake, and helps you avoid sunburn. Available in beta on TestFlight.
posted on 07/14/2025Jack Dorsey launches Sun Day, an app that tracks UV exposure, vitamin D intake, and helps you avoid sunburn. Available in beta on TestFlight.
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posted on 03/31/2025