Jack Dorsey, Block CEO and Twitter co-founder, has launched the “Sun Day” app to estimate sun exposure for users based on location, UV index, clothing, skin tone, and health data. The app requires manual input for accuracy and aims to provide personalized estimates while remaining conservative for safety.
The app is available through Apple’s TestFlight app and factors in various data sources, including Apple Health app and historical data from HealthKit vitamin D records. Future improvements may include more precise calculations based on height and weight, seasonal adjustments, and actual vitamin D blood tests.
This is Dorsey’s second app release in two weeks, following the launch of the beta version of a decentralized messaging service called Bitchat, which operates over Bluetooth. Dorsey explained his interest in learning about Bluetooth mesh networks, relays, encryption models, and more. He emphasized that these app launches are part of his learning process.
Read more at Cointelegraph.com
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