I have a Verizon iPhone 4 and I was just curious for you other smart phone folks who have thru hiked, or are planning to, what apps are must haves out on the AT? I've had my phone for a couple years and really don't use it to its full potential so I don't have any kinds of hiker apps.
The only ones I have are the weather channel and google earth. I'd love to hear other suggestions. Share em if ya got em!