Apple has separated its three time-based categories into separate apps on Apple Watch. This allows you to quickly access the specific feature of the timer, alarm, and stopwatch you want with just a few taps.
While most of it is self-explanatory, we've got some tips for how to get the most out of each of these apps so they work the way you want, when you want.
Timer
The Timer app on Apple watch makes it possible for you to set a timer right from your wrist so you don't have to search out your iPhone to activate or even turn off the alert when time is up.
Tap the Timer app icon on Apple Watch to open it. Then rotate the Digital Crown to adjust the time. When ready, tap the Start button.
You can switch between a timer that goes from zero to 12 hours and a timer that goes from zero to 24 hours by firmly pressing the display screen.
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Article Link: Using the Timer, Alarm, and Stopwatch Apps on Apple Watch