This widget display the date and time of your next scheduled alarm on your home screen.
You can tap the widget to launch your alarm app.
It should work with any alarm app which respects android standards for setting an alarm and registering as the default alarm app. It works great with Google's Clock app.

This app consists only of this widget so there will be no icon in your application drawer. The way to add a widget to the home screen depends of the software of your device ; it is typically done by long pressing any blank area on the home screen.

IMPORTANT:
If you use a "battery saver" application or if your device built-in software has similar features please authorize Alarm Display Widget to run at any time. Also do not use the "Force Stop" button in the Settings app. Otherwise the widget might no update correctly. If the widget get "stuck" because of this check your settings and then tap it to re-enable it.
The widget is designed to run and update itself only when strictly necessary but force stopping it will prevent the system from correctly waking it up and notifying it of alarm changes.