Launching this application your current position will be determinated (either via GPS or via network info) and you can save it (for later use) or share with your friends.
Each time you share a location will be sent a link to google Maps with the location coordinate so who will receive the location can easy open google Map or the car navigator.

Saving a location could be useful if you want quickly open google map on certain location without save location on google store.

It use a design "like" Material Design (not really available on device before L).