Apple Watch required
The simplest Apple Watch daylight tracker.
Apple Watch records your Time in Daylight. Sun Light turns it into a friendly daily ring, a streak, and a 7-day history. That's it.
Apple Watch records your Time in Daylight. Sun Light turns it into a friendly daily ring, a streak, and a 7-day history. That's it.
Time spent in natural daylight is one of the simplest, free things you can do for your body. Sun Light just makes it easier to notice whether you actually do it.
Natural light helps your body produce serotonin, supporting steady mood and afternoon energy.
Daylight in the morning helps regulate your circadian rhythm, so you sleep deeper at night.
Time outside supports natural Vitamin D for stronger bones and a healthier immune system.
Outdoor time is one of the most studied factors in long-term eye health, especially for kids.
Apple Watch automatically records Time in Daylight in the background. No timer to start, no button to press.
Walk the dog, sit on the porch, eat lunch in the sun. Your watch is doing the counting.
Open Sun Light to see today's ring, your streak, and where your daylight came from across the day.
Today, History, Settings. No score, no plan, no homework. Just your daylight.
Daily ring, streak, sunrise & sunset, time-of-day breakdown.
7-day bar chart with a goal line, daily average, and best day.
Set your goal. See your Apple Watch status. Tip if you want to.
Sun Light runs natively on Apple Watch with a clean ring view and lock-screen complications.
Today's ring, right on your wrist.
Add Sun Light to a watch face for a quick check.
That's cool — I didn't know my watch could measure sunlight.
It's really important for health to get sunlight. This is great.
This is how I check my Vitamin D.
Daily daylight progress ring
Streak tracking
7-day history chart
Morning, afternoon, evening breakdown
Custom daily goal
Sunrise and sunset times
iPhone home & lock screen widgets
Apple Watch app and complications
No account. No server. No analytics. No ads. Your daylight data stays in Apple Health, on your devices.
Sun Light is free, with an optional tip jar in Settings if you want to support development.
Download on the App Store