
The creator of Twitter, Jack Dorsey, has developed a brilliant idea for an iPhone alpha app called Sun Day, which tracks your exposure to the sun. ,
The app is free to test users, and it has so far basic information like sunrise, sunset, and the UV index to figure out a user’s potential burn-limit time and, as the description of the app says,” track your Vitamin D from the sun” ( see screenshot ). Dorsey is presently testing Graphic changes and a thermal lunch alert, according to the app notes. Users may describe the clothing they’re wearing, like as shorts and T-shirts or swimwear, and their Fitzpatrick body type, which determines how fast they’ll burn.  ,
People typically think about sun protection and coverage, especially in the summer, when the sun is out and the days are long, and when they are heading to the seaside, gardening, golfing, or other forms of sun-related activity.
When the iphone software is installed, the app asks permission to link to some Apple Health information.
Dorsey , announced an iOS Test Flight app for Sun Day on Sunday, with a  post on X ( ancient Twitter ).  ,
A private communications consumer that uses Bluetooth as its communication platform has recently been released by Dorsey. Although it’s intended to be a secret, safe application, some users have flagged Bitchat as having security issues that are still being investigated.  ,