SuperTimer

SuperTimer is the best timer experience for Windows 10 and Windows 10 Mobile: it allows you to personalize your timers by adding a picture, a custom message and to pin your timers to your start screen to launch them in just a tap, as soon as you need.

Plus SuperTimer includes a handy Stopwatch with lap functions.

Trial version includes just one timer while FULL version let's you add as much timers as you want.