RotoPhoto - Apps like these make iPhone platform great

No need to add any extra words - The site does it well enough.

"RotoPhoto is an iPhone app that does one thing, rotates your photos! Sometimes photos taken with the iPhone come out sideways due to the iPhone’s internal sensor being confused when the photo was taken. With RotoPhoto, you can fix your photos orientation."

Here's a sweet demo - all companies should make it look this plain and simple.