Sleex Wallpaper Changer (pitris.sleex) on Google Play
Sleex is a simple wallpaper changing application based on the Google Image Search. It changes your wallpaper periodically at the given rate allowing you to configure the search phrase (the same as you search for images on Google), safe search feature (filters out porn and similar), aspect ratio and many others. All downloaded images can be saved to the SD card.Application requires the internet connection to work.