Navfree USA: Free Satnav compare (Android)

Navfree USA is about as basic as navigation apps get, but its ability to store local map data, its frequent updates, and the fact that it's free make it an invaluable tool for Android navigation.

With its impressive list of features and syncing of data across other devices, Google Maps is a must-have application for anyone running Android.

Athletes may be able to find more features in other training-specific apps, but My Tracks works well as a multipurpose GPS tracker.

TomTom's app for Android is a premium-caliber turn-by-turn app, but it comes at a premium price and lacks critical features that most casual navigators would want.

Inrix Traffic for Android is a good trip-planning supplement for accurate travel time estimates, but you'll need a primary navigation app for turn-by-turn navigation.