Jack Dorsey's New App Tracks Sun Exposure, Vitamin D
Dr. Javier RodriguezJack Dorsey's Sun Day app tracks UV exposure and Vitamin D levels, offering personalized sun safety advice.

TL;DR
Jack Dorsey, the co-founder of Twitter, has launched a new app called Sun Day, just a week after releasing Bitchat, a peer-to-peer messaging app. Sun Day aims to help users track their UV exposure and Vitamin D levels, providing insights into their health and well-being.
This new app leverages personal details, including location, to provide accurate data. Sun Day is currently available in beta on TestFlight for iOS devices..
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Highlights
- Sun Day tracks UV exposure and estimates Vitamin D levels using location data.
- Users input skin type and clothing to get personalized sun exposure advice.
- The app was developed using the AI coding tool Goose and is open source.
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Top 5 Key Insights
• UV Exposure Tracking: Sun Day helps users monitor their exposure to harmful UV rays by utilizing location-based data to display the local UV index, sunrise, and sunset times. This allows users to make informed decisions about their time spent outdoors.
• Vitamin D Level Estimation: By inputting their skin type and clothing coverage, users receive an estimate of how much Vitamin D they may have generated. The app helps users understand their potential Vitamin D intake and avoid prolonged sun exposure.
• Personalized Burn Time Alerts: Sun Day calculates how long users can stay in direct sunlight without burning, based on their skin type and clothing. This feature helps users protect their skin and prevent sunburn.
• AI-Powered Development: The app was developed using Goose, an AI-based coding tool, showcasing Dorsey's experimentation with open-source AI in app development. This highlights the growing trend of AI-assisted coding in the tech industry.
• Open-Source Project: Sun Day is an open-source project with its code published on GitHub, inviting collaboration and transparency. This approach aligns with Dorsey's interest in decentralized technologies and open development practices.
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Expert Insights
Dr. Javier Rodriguez, Public Health Specialist: "Tracking sun exposure and Vitamin D levels can empower individuals to make healthier choices. Apps like Sun Day can raise awareness and promote better sun safety practices."
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Wrap Up
Sun Day represents a novel approach to personal health tracking, leveraging technology to provide users with valuable insights into their sun exposure and Vitamin D levels. The app's development using AI and its open-source nature reflect Dorsey's ongoing experimentation with emerging technologies.
By providing personalized recommendations and burn time alerts, Sun Day encourages users to make informed decisions about their health and well-being.
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Author
Dr. Javier Rodriguez - A medical doctor and public health specialist based in Latin America, focused on wellness and disease prevention. He provides reliable, evidence-based health information and practical wellness advice for Enlightnr.More to Explore
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