Wifi battery saver for Android

Wifi battery saver app for android description: Espa ol english french italianowifi networks coexist with us for several years and so we have a number of networks stored on your smartphone (home work home of family leisure etc.
).
But what happens on the way from one to another? If not shut it off manually we are with the wifi on and downloading our battery with the disorder involved because the big problem we suffer all smartphone users is the battery management.
For all this wifi battery saver born the only application that solves this problem completely will automatically turn on the wifi in areas with known networks and disconnect when we get out of them and all without using gps.
Note: does not work on devices without mobile internet because the operator does not provide the position if no contracted data tariff.