Navigon’s iOS offering has the best interface of any map app we’ve tested. There’s very little worse than heading to some unknown locale and having to strain your eyes to understand what the app is directing to do. You won’t have that problem wth Navigon’s app. The turn-by-turn directions are well-paced and the 3D map shows you exactly where your car should be. The app also comes with Google Local Search built in, as well as cool day and night modes for when you’re doing those long hauls. We wish the pedestrian guidance was better, but for $3 you can cop the Urban Guidance add-on which gives transit and walking directions. Yes, it’s $40, but don’t think of it as an app so much as a portable GPS system crammed into your iPhone.