Google has launched its free navigation app on the Android & they have also confirmed in a press conference that google has plans to bring its free turn-by-turn navigation app to other smartphone platforms, including the iPhone. Google will not comment on the launch date or period for the iPhone. What will be the best feature that a lot of iPhone users miss is pre-caching of the entire route when looking up the directions to get somewhere. This is somewhat a problem if you use the current google maps to get directions and you happen to go through an area that has no 3G or even better has no Edge even.

“Google Maps pre-caches the entire route,” said Mobile Maps product manager, Steve Lee. “It needs a data connection when you ask for navigation. But while driving to your destination, if you intermittently lose the connection, it will still carry on. As long as you stay on the route.

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