Date+ is a simple utility application for the iPhone & iPod Touch.
Just select a starting date,
Select whether to add or subtract from that date,
Then select a number of Years, Months, Weeks, Days, Hours, Minutes, and Seconds to be added or subtracted to the start date.

Date+ will compute the resulting date for you and display it in an easy to read format including the day of the week.
e.g. "Wednesday, September 3, 2008"

Date+ is an easy way to compute a date by counting forward or backwards in time, without the need to count weeks on a calendar by hand.

That's what Date+ is about. Nothing more and nothing less.