Looks like this site is new and hopefully grows and adds more, but it has potential. This site is from the UK and collects information about educational apps for IPods, IPads, etc. that are out there and puts them in curriculum categories that make it easy to find what you are looking for. Looking for a math app or science app? Easy to find on this site. It simply needs to add more apps to become much more useful. But for now, you might find some good stuff to try out.
Teaching Appz click here!