I have and use TomTom, however it is 2X app for the iPad. I also have and use Navagon. Navagon is iPad ready and works at full screen on the iPad. Keep in mind as long as you have iPad with GPS it will work great. Traffic when activated needs the network, so if you do not purchase the in app traffic or if you have it turn it off and you will be fine. On the other hand using google with a 3G iPad should also be fine for walking racially in hybrid or image mode, and it is already on the iPad.
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