It's free, so I've just downloaded it and had a 5 minute play. It's basically the MBA bothies (and I think a couple of others) put onto the basic google maps you get on your phone (well on my iPhone anyway). You can scroll down a list, or footer about on the map screen to see where they are. Of course, if you're in the hills you probably won't have the reception to actually use it, so it's really just to have fun planning stuff as far as I can tell.
Can't shake a feeling that it's cheating though...
