01
Watch the number climb
The lead number is the time you have spent in daylight today, against a target you pick. It is on the Today screen, both widgets, and every complication.
Minutes outside, with a deadline
A daylight tracker app with a sunset deadline
Apple Health counts the minutes you spent in daylight. This gives that number a target to climb toward, then adds the half nobody shows you: how much the sun still has to offer, and the time you would have to head out to reach it.
See how it works02
Get your deadline
Short of your target? The app works out the latest you could start and still reach it before the light goes, and moves that time with the season.
03
Find your personal pattern
Daylight+ checks how recorded daylight lines up with sleep, activity, heart, and breathing records. It highlights only clear relationships and says when none appear.
Calculated, not guessed
Sunrise and sunset worked out on your device
The app uses the NOAA solar position algorithm and one approximate location fix. There is no server, no background tracking, and no network call to find out when the sun sets. It handles the polar cases too, where the sun does not rise or does not set at all.
daylight left = sunset − now
Built into your day
Phone, wrist, widgets, and Apple Health
Check the remaining figure in a widget or a watch complication, choose which Apple Health sources count, and set a reminder before your daily deadline. Time in Daylight is recorded by Apple Watch; without one, the minutes-spent figure stays at zero and the app says so, while the sunrise and sunset half still works.
The optional Personal Daylight Model reads sleep, activity, resting heart rate, heart-rate variability, and respiratory rate. It runs entirely on your device and never uploads Health data.
What this is not
A record, not a prescription
Daylight reports what your devices recorded and what the sun offers. Your daily target is your own preference. The app does not diagnose, treat, cure, or prevent anything, and makes no claim about mood, sleep, vitamin D, or eyesight.
Questions
Daylight tracker app, answered
Is there a daylight tracker app for iPhone and Apple Watch?
Yes. Daylight reads Time in Daylight from Apple Health, shows it against a daily target you choose, and works out the latest you could head out to reach that target before sunset.
How do I track my time in daylight on Apple Watch?
Apple Watch records Time in Daylight in Apple Health, and Daylight reads that number and shows it on the Today screen, in widgets and on watch complications. Without an Apple Watch the minutes-spent figure stays at zero and the app says so, while the sunrise and sunset half still works.
How does Daylight know when the sun sets?
Sunrise and sunset are calculated on your device with the NOAA solar position algorithm and one approximate location fix. There is no server and no network call to find out when the sun sets, and polar days and nights are handled too.
What is the latest time I can go outside to reach my daylight target?
If you are short of your target, Daylight works out the latest you could start and still reach it before the light goes. The deadline is anchored on sunset so it moves with the season, and when the target is out of reach the app says so plainly.
Does Daylight have widgets and Apple Watch complications?
Yes. Daylight has Home Screen and Lock Screen widgets and Apple Watch complications in circular, rectangular, inline and corner styles, each showing progress toward your target.
Does Daylight upload my Apple Health data?
No. The optional Personal Daylight Model compares daylight with sleep, activity, heart rate, heart-rate variability and respiratory records entirely on your device, and Health data is never uploaded.
Does Daylight give health advice?
No. Daylight reports what your devices recorded and what the sun offers, and your daily target is your own preference. It does not diagnose, treat, cure or prevent anything, and it makes no claim about mood, sleep, vitamin D or eyesight.