Garmin's Navigon, Telenav's Scout, and TomTom are all excellent GPS turn-by-turn navigation apps available for the iPhone, and all handle navigation, especially the bells and whistles surrounding it, differently. Since turn-by-turn GPS navigation apps are among the few that have maintained higher price points in the app store, so it's not financial viable to simply buy them all and figure out which one works best for you. That's where iMore comes in! We've loaded them up, driven around, and figured out who offers the best all-in-one maps and voice navigation package, and more importantly, which one is best for you!
Note: We will be using the U.S. versions of all three apps but all three have many different offerings across several countries.