There are two: [http://developer.android.com/reference/android/location/package-summary.html android.location] and the [https://developer.android.com/training/location/index.html Google Play Services API]. They both work and Google encourages you to use their proprietary APIs, which may but may not be in fact in your interest. In the interest of To save time we'll only look at the Google Play APIs here, they are better documented.