Anything in the world has its expiring date, such as milk, meat, vegetables, etc. However, not only food, your bill, work, even your age has expiry date!
Some of these dates are very important among them while some are petty. But they won't be messed up in your scheduling book with lots of meetings or any other important stuff.
The App helps you to manage the expiring dates of everything and reminds you only when necessary, helps you get rid of making things expired.

(ps. Requires notification to be turned on.)