Sun Day is the second app that the Twitter co-founder has launched in the last week, and it was built using Block’s artificial intelligence assistant, Goose.
Block CEO and Twitter co-founder Jack Dorsey has launched a new app that gives users a rough idea of how much exposure they’ve had to the sun.
Dorsey shared the “Sun Day” app to his followers on X on Sunday, which, according to its white paper on GitHub, “calculates vitamin D synthesis from UV exposure using a multifactor model based on scientific research.”
It is available through Apple’s TestFlight app, which allows developers to test beta versions of their apps to get feedback from users before an official release.
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