Wallpapers by Google is an official app created to provide Android users with a variety of beautiful wallpapers and backgrounds for their smartphones. With Wallpapers by Google, users can access images from a number of other Google products, including Google Earth and Google+, as well as their own photos. Not only can the wallpaper on their lock screen be changed, but the background of the home screen, too. Users even have the ability to change the image every day after picking their favourite category.