Microsoft has finished testing the new Alarms and Clock app for Windows 10, and it is now rolling out the update for all users. Previously, a new version with the overhauled UI was available to Windows Insiders only.
One of the built-in Windows 10 apps, Alarms & Clocks, has received the updated user interface. Starting in app version 10.2012 it has a new control appearance with acrylic effects and rounded corners.
The Alarms & Clock app is a preinstalled Universal Windows Platform app (Store app) in Windows 10. The app is a combination of alarm clock, world clock, timer, and stopwatch. With the app, the user can set alarms and reminders, check times around the world, and time your activities, including laps and splits.