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Jack Dorsey’s latest app tracks sun exposure
Twitter co-founder Jack Dorsey's new app, called Sun Day, ostensibly helps users track UV exposure and Vitamin D intake.
After releasing a Bluetooth-based messaging app called Bitchat earlier this month, this weekend Dorsey revealed another app called Sun Day that ostensibly helps users track UV exposure and Vitamin D intake. It shows you the UV Index for your location along with details like cloud cover, sunrise, and sunset timings. Based on these parameters, the app will calculate how long you can expose your skin to sunlight before it starts to burn.
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