Do Date does one thing but does it well: it adds a list of important upcoming dates to the Notification Center. It isn't an app to keep track of your various meetings each day because you can't schedule events to the minute and hour. For each reminder, you select the month, day, and year, and an entry gets added to the Notification Center, showing the numbers of days between now and the date. For example, I now know I have 13 days left to shop for my wife's birthday and 23 days to practice before being thrown to the wolves in a pond hockey tournament.