GPS APP that does not use a lot of data

Any of the ones that use locally stored map data. TomTom, Navigon, etc. Have you looked at any prior threads on GPS nav apps?

 

^^ That.

I highly recommend Navigon. It's a great app, and you can download only the states you need, so it no longer takes up 2+gigs, like it used to back in the day. It also interacts well with the iPod app. I like the traffic feature, but that does use data. Anyway, it's better than my former standalone GPS.

 

+1

Just remember traffic data and live routing still uses data