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Show HN: I built a daily sunlight tracker

(www.lumehealth.io)
45 points vickipow | 3 comments | 26 Jun 25 23:28 UTC | HN request time: 0.206s | 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!

1. metalman ◴[30 Jun 25 15:33 UTC] No.44424555[source]▶
ummmmmm, if you dont have some kind of tan lines, you are not getting enough sunlight the app is pre loaded at birth .......though,I get it, as there is a significant demographic who will only trust there (beloved) device, and will benifit from the prompt, perhaps, perhaps not, as there is no possible way to break out all of the inumerable ways that human phisiology has adapted to ambient conditions on our planet, into seperate apps, so.....
replies(2): >>44424654 #>>44425449 #
2. tolerance ◴[30 Jun 25 15:42 UTC] No.44424654[source]▶
I'm with metalman on this.
3. vickipow ◴[30 Jun 25 16:54 UTC] No.44425449[source]▶
I get what you're saying.

The product we're working on in the background is a wearable hormone monitor that actually shows you at the molecular level how much sunlight impacts your hormones - we've found this to be the most powerful lever for behavior change. But in the meantime, we have been using the saying "you can't improve what you can't measure" to help people get more sunlight.