Block CEO and Twitter co-founder Jack Dorsey has launched a new app that gives users a rough idea of their exposure to the sun.
Dorsey shared “Sunshine Day” app for his followers on Sunday on X, the app according to In the white paper on Github, “Multi-factor model based on scientific research is used to calculate vitamin D synthesis in UV exposure.”
Beta version provided by Testflight
It is available through Apple’s TestFlight app, which allows developers to test the beta version of their app to get feedback from users before it is officially released.
The app uses location services to track the current UV index and estimates sun exposure based on the user’s location. It also requires inputs for age, type of clothing worn and individual skin tone.
It will also be affected by other data and historical data from the Apple Health app, such as HealthKit Vitamin d records.
“The application is designed to provide personalized, accurate estimates while conservatively safe,” its white paper said.
Sunshine Day requires manual input to work
The application requires the user to enter data manually. Users will need to click on the button when exposed to the sun once they return indoors.
“(…) Not looking for light. This is a manual toggle on/off,” Dorsey explain In response to the user’s problem on x, explain Another one recorded by the application after each session.
There will be some improvements in the future. The white paper uses more precise calculations based on height and weight as well as seasonal adjustments and user’s actual vitamin D blood tests as possible updates.
Dorsey’s second app in two weeks
Last weekend, Dorsey Beta version of a new decentralized peer-to-peer messaging service called Bitchat, Run completely via Bluetooth.
At the time, he said his weekend was spent learning “Bluetooth network networks, relays, storage and forward models, message encryption models and a few more.”
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In Sunday’s post, Dorsey Tell Ask if the user who is launching the app is part of a plan to flood the market and see “No. I’m learning.”
So does he reveal He is using Block’s AI assistant Goose to create applications.
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