Does anyone know of any apps that change the wallpaper randomly.. either each time the screen loads or at user set intervals? I found myself browsing the Backgrounds v19 app and saving about 33 different pictures I like. (Got indecisiveness?) Another issue I have is that I can set the wallpaper directly from the app and it comes out clean, but when I manually change the wallpaper it makes me crop it. Any way around this?