Add a widget to know how many days lefts for a event.
Widget app that allows you to know how many days left for a specific day.
Add the widget and you will see a full calendar that shows the elapsed days marked with a cross since you created the widget to the current date and you can see how many lefts days for the event.
IMPORTANT:
This is a Widget app, if you open the app from the launcher you only will see some links to contact me please add a widget instead.