Its called Dashcommand, one of the Pioneer supported Appradio apps with the iphone. Connects via a wifi OBD transmitter - they cost $30 off ebay. Loads of different screens, dials, themes etc. If you forward to half way on this Pioneer video, you can see it in action:
AppRadio- The Revolution Continues - YouTube
I have the Porsche subs in the doors so rear speakers were a must for me.