There are various wallpaper apps available for Android. Usually most of them accept any old wallpapers, so you tend to find that 90% of them are rubbish. Pattrn is a little different. Pattrn for Android is an app which accepts wallpapers which look like patterns.
The app has latest, favourites and popular sections. The popular section does actually have some really gorgeous wallpapers which bring your screen to life. You can also set the app to automatically change wallpapers either once a day or every monday. You can have it choose from your favourites, most popular or randomly.
It's also completely free. There are so many wallpapers on there that you shouldn't really ever get bored.