Jack Dorsey unveils Sun Day app for iPhone to track UV exposure, Vitamin D, and moon phases with health data protection.

BitChat: Twitter co-founder Jack Dorsey has launched a brand new messaging app 'Bitchat, which is specially designed to work ...

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 ...

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

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

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

Another day, another app from Jack Dorsey. The Twitter co-founder has announced an app called Sun Day just one week after ...

The new app called Sun Day tracks your UV exposure as well as Vitamin D levels. Last week, Dorsey introduced a new Bluetooth ...

Jack Dorsey has launched a beta version of Sun Day, an app that estimates sun exposure time and vitamin D levels using UV index, skin tone, age, clothing, and Apple Health data.

Twitter co-founder and erstwhile CEO Jack Dorsey has started yet another new app — and this one's got an embarrassing secret.