Re:Show HN: I built a daily sunlight tracker
by vickipow on Monday June 30, 2025 @12:52PM
(#44425412)
Yeah unfortunately you have to have the screen exposed for a few minutes each time you go outside.
I spoke to the team at Apple, they said as long as you have a couple of minutes in the sunlight while you're on a walk it will then use sensor fusion to count the rest of the time outside.
Unfortunately, it is not the most accurate. If you wear full sleeved clothing which cover your Apple Watch, it will report wrong numbers.