Jack Dorsey’s Latest App Tracks Sun Exposure

Twitter co-founder Jack Dorsey is connected an app-building spree. After releasing a Bluetooth-based messaging app called Bitchat earlier this month, this play Dorsey revealed different app called Sun Day that ostensibly helps users way UV vulnerability and Vitamin D intake.

The caller app is available via TestFlight connected iOS, and its codification is connected GitHub for anyone to clone.

Like different developers, Dorsey is riding nan vibe-coding bandwagon. But alternatively of utilizing Cursor, Claude Code, aliases Windsurf, he says he is utilizing an open-source coding instrumentality called Goose.

Sun Day is elemental to use. It shows you nan UV Index for your location on pinch specifications for illustration unreality cover, sunrise, and sunset timings. You tin take your tegument type from six options, and what benignant of clothing you’re wearing. Based connected these parameters, nan app will cipher really agelong you tin expose your tegument to sunlight earlier it starts to burn.

Image Credit: TechCrunch

The app besides shows your minimum vitamin D intake. Start a convention by tapping connected nan “Track UV Exposure” button, and aft nan convention is ended, nan app will show really overmuch vitamin D you’ve gained passim nan session, and successful nan day.