The founder of Twitter, Jack Dorsey, has a bright idea that he’s released as a beta app for iPhones: Sun Day, for tracking your exposure to the sun.
The app is free to testers and so far contains basic information such as sunrise, sunset and the UV index in order to assess a user’s potential burn-limit time and, as the app description says, «track your Vitamin D from the sun.» Dorsey is currently testing UI updates and a solar noon notification, according to the app notes. In the app, users can describe the type of clothing they’re wearing, such as shorts and T-shirts or swimwear, and their Fitzpatrick skin type, which classifies how quickly they’ll burn.
People tend to think about sun exposure and protections like sunscreen most during the summer, when the sun is strongest and the days are long, and when they’re heading to the beach or out gardening, golfing or otherwise getting in quality sun time.
The iOS app asks permission to connect to some Apple Health data when the app is installed.
Dorsey announced an iOS Test Flight app, Sun Day, on Sunday, with a post on X (former Twitter).
Dorsey also recently released Bitchat, a private messaging client that uses Bluetooth as its communication platform. Although it’s meant to be a secure, private app, some users have flagged Bitchat for potential security flaws that are still being tested.
