How to reduce use of your mobile application: "Mobile applications, and especially mobile games, are frequently used in short bursts. These bursts could be due to short attention span, short task, incoming call or message, the train arriving, or any number of other things. Thus the user will frequently exit the application, either intentionally or unintentionally.

Once the user exits the application, if you don’t want her to use the application again, do some of the following"