Show HN: I built a daily sunlight tracker

Re:Show HN: I built a daily sunlight tracker by vickipow on Monday June 30, 2025 @12:42PM (#44425300)

Thanks (1) You can join the waitlist for our hormone tracking device, the app is available for download today on TestFlight. Eventually the app will be used to show you the connection to your hormone balance (like cortisol etc.) and your light exposure. They are very tightly linked! (2) there is a light sensor in the display of the Apple Watch that automatically tracks it. It works ~80% of the time, but struggles if you have a big jacket

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Re:Show HN: I built a daily sunlight tracker by dylan604 on Monday June 30, 2025 @01:02PM (#44425558)

Most people have their phone in a pocket or purse or similar while outdoors. Wouldn't this require the phone to be out and exposed to light in order to work correctly? So not only are you trying to get people to change habits of getting outside, you're also requiring they change habits with the devices as well. Good luck with that, and I mean that with more sincerity than snark but not no snark.

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Re:Show HN: I built a daily sunlight tracker by vickipow on Monday June 30, 2025 @03:20PM (#44426868)

The light sensor is in the Apple Watch display (behind the screen) it's what it uses to adjust the screen brightness. So if it's exposed to the sun it will count it automatically

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