It's a pretty handy app, I feel like it paid for itself just this past weekend. I was able to map my route and plan a new route back all with out any cell service. I paired it with a dual electronics xgps150a universal external gps which worked flawlessly. Even hiking through the thick woods it never lost signal. It's Bluetooth so you can keep your phone in its case unlike the bad elf gps. The only downside is, it uses Bluetooth which uses your phone battery a little quicker. It's still worth it in my opinion.
As for the tundra, I like it for a big rig. The v8 is a nice upgrade in power over the 3.4, the captains chair front seats feel like your sitting on a couch, tons of bed room and even in some thick mud she pulled through. The only thing that bothers the **** out of me is how much frame flex Toyota decided was acceptable. The bed will wiggle 1/2" left and right over normal bumps. If I ever get the time I'd like to fully box the frame in.