Jack Dorsey’s Sun Day App May Offer Estimates of Vitamin D Exposure Using AI and User Input
2025-07-14 06:27:03
Main Idea
Jack Dorsey’s Sun Day app uses AI and scientific data to track sun exposure and vitamin D synthesis, offering personalized health insights through a beta release on Apple’s TestFlight.
Key Points
1. Sun Day app tracks UV exposure and vitamin D synthesis using variables like user location, skin tone, age, and clothing type.
2. The beta release aims to gather user feedback before a full launch, with manual input features to enhance safety and accuracy.
3. The app reflects Jack Dorsey’s experimental approach, integrating AI-driven analytics through Block’s AI assistant, Goose.
4. Future enhancements may include expanded health metrics and more precise AI-driven recommendations.
5. Sun Day is part of Dorsey’s broader focus on decentralized technology, blockchain, AI, and health tech innovations.
Description
Jack Dorsey, co-founder of Twitter and CEO of Block, has introduced “Sun Day,” a novel app designed to estimate users’ sun exposure and vitamin D synthesis using advanced scientific modeling.
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