Maps application with audio functionality is a out of box thought.It actually saves your money.Now you will ask me how?Let me explain!you are going by car or bike you use maps and reach to destination without juggling on the same road and thus saving your petrol and time. If you are new in the city and travelling by auto or taxi, it is very useful to shorten the distance and also to judge smartness of the drivers.
All maps has to come-up with application which also works offline.