There are a lot of navigation applications for the iPhone, but most of them are aimed at sticking to the pavement. Spyglass, an app for the iPhone by Happymagenta, a software development shop in Minsk, can handle simple pedestrian tasks too—like finding where you parked after a day of walking around the city. But it's got enough off-the-beaten-path navigation features to make your inner boy scout want to take a hike.
The problem is, there are so many features that you might get a little lost trying to figure them out. Documentation is not Spyglass's strong point. But what do you want for $1.99?