If you are talking about the geotarget, the inbuilt photo app has it. Go to settings> general> Restrictions> location> location services ("set to on)" camera ("set to on")
Are you talking GPS coordinates? I have a car oriented app that lists GPS coordinates as well as compass direction and speed called aDrivePhoto. Of course it also lists the accuracy rate (worse indoors of course) and shows the Google Map location in a small box in the lower left hand corner. Also shows altitude as well and you can adjust between miles and kilometers.