Available in English. This is the Demo version of the nifty "Wallpaper Switcharoo". it will switch your wallpapers for you automatically in the background. The demo version will show you all that the app can do, but it will only work for 1 week. Give it a try, and if you like the app and the images, you should check out the paid version. I promise it is super-snazzy! Find it in the app catalog by searching for "Switcharoo".

Wallpaper Switcharoo Demo screenshots: