Wally is an application that allows you to select a background for your android device from a wide selection. These images are in high resolution and in a format congruent with the form factor of the device. In addition, you can set the images as the background of the home and the lock screen independently. Wally also allows the user to interact by adding images that were not present in the collection. For security and order reasons the added images of the user will first need to be validated by the developer before being included in the application image collection.