Jack Dorsey is shipping. On Sunday, the Twitter co-founder shared a link on X (formerly Twitter) to a new app called Sun Day, ...

The Sun Day app, just out in beta, will prompt you on how to prep for being out and about. The founder of Twitter, Jack Dorsey, has a bright idea that he's released as a beta app: Sun Day, for ...

Jack Dorsey, Twitter co-founder, has launched a new app named 'Sun Day' that enables users to monitor their UV exposure and ...

Jack Dorsey has launched Sun Day, an iOS app that tracks UV exposure and estimates vitamin D levels based on location, skin ...

Jack Dorsey launches Sun Day to track UV exposure and Vitamin D intake, following his Bluetooth-based messaging experiment ...

After launching Bitchat, Jack Dorsey has introduced another experimental app called Sun Day, designed to track users’ sun ...

Twitter co-founder Jack Dorsey's new app, called Sun Day, ostensibly helps users track UV exposure and vitamin D intake.

Jack Dorsey has launched Sun Day, a new iOS app that tracks Vitamin D synthesis using real-time UV data. The app estimates ...

Twitter co-founder Jack Dorsey has released a new app that tracks your sun exposure and vitamin D levels. It’s his second app ...

Jack Dorsey’s new app wants to help you catch some sun — without the burn. The Twitter (now X) co-founder just launched a new iPhone app called Sun Day. It’s designed to track your UV exposure and ...

The app is open source, with its code published on GitHub, and it’s the latest in Dorsey’s experimental “weekend builds” — ...