Hmmm... I've tried out the app. All it gives me is a black screen of death. Nothing loads or appears. (?) Using an iPod touch 4, iOS 6.1.3.
Wow! It works and actually looks liks Google Maps! Just wondering though - why does it take so long to load? Is it fetching both Apple Maps and Google Maps and then displaying Google Maps? And what happened to Transit Directions? Shouldn't that be part of the Google Maps API? Overall, it's really good. Just needs some polishing here and there.