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Sun Day is available now for iOS via TestFlight, and the code for the project is available on GitHub. The app uses location-based data to display your local UV index and sunlight hours. You can detail your skin type and clothing level, then manually toggle when you’re in and out of the sun and the app will track your rough vitamin D levels for the day, along with how long you can be in direct sunlight without burning.
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Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . If you've been eyeing Ooni's pizza ovens, but haven't yet taken the leap, there are a few tasty Prime Day deals that will save you some cash. Better yet, they're still available on day 3 of the sale. The biggest savings is on the company's electric model, but there's gas and wood-burni
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Rita El Khoury / Android Authority In an intriguing Prime Day development for tech enthusiasts, the Oura Ring 4 is available at a significant discount. For us, this wearable is the best smart ring you can buy, is being offered at an attractive price for a limited time. The Oura Ring 4 is now available for $296.65, down from its usual $349. This represents a 15% discount and the first real one of any note since it launched last year. It’s an excellent opportunity for those interested in health t