(www.lumehealth.io)

45 points vickipow | 1 comments | 26 Jun 25 23:28 UTC | HN request time: 0.402s | source

I kept trying to explain how important outdoor light is and how most people aren’t getting enough. Eventually I figured that showing is more effective than telling.

So we built a free app that uses your Apple Watch or iPhone to automatically track your light exposure throughout the day.

It tells you if you’re getting enough, shows you how consistent you are, and rewards habits that support hormone balance.

It's in beta on TestFlight, let me know what you think!

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Fraaaank ◴[30 Jun 25 13:04 UTC] No.44422805[source]▶

>>44392459 (OP) #

>how most people aren’t getting enough

What are you basing this on? What counts as 'enough'? And how are you tracking light exposure?

replies(3): >>44422907 #>>44423101 #>>44423837 #

1. wonger_ ◴[30 Jun 25 14:32 UTC] No.44423837[source]▶

>>44422805 #

"In the Fall of 2023, Apple introduced a new metric called “Time in Daylight” as part of watchOS 10 with Apple Watch Series SE (second generation) and Apple Watch Series 6 or later. This metric uses the ambient light sensor in Apple Watch and an associated algorithm to estimate how much time is spent in daylight and maximum intensity (lux) in 5-minute increments."

https://appleheartandmovementstudy.bwh.harvard.edu/summer-da...

Couldn't find any direct source from Apple tho

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Show HN: I built a daily sunlight tracker