Is your wallpaper boring? You are afraid to search and download new wallpapers? Look no further, because you are at the right place. Ultimate Wallpaper Changer does exactly what you are looking for: automatically downloads new wallpapers from all over the internet and sets it for you.

MAIN FEATURES
- downloads wallpapers from the internet(currently hdwallpapers.net and wallpaperstock.net are supported, but new sources are coming soon)
- changes your background within defined time interval
- you can set to download wallpapers over wi-fi only by specifying this in the settings, so it isn't using your data plan
- wallpaper caching: automatically downloads a few wallpapers in advance, you can set the number of it in the settings(e.g. you set the cache size to 10; when you are connecting to your wi-fi in the morning, it downloads 10 images, and you have fresh backgrounds for the whole day)
- it saves your battery: it's not changing your wallpapers if your phone wasn't used(e.g. at night)
- widget: you can put the widget to your launcher, and make a wallpaper change with just a tap on it

Screenshots: