[BKillar]

I downloaded a new app (new to me that is) called Pattrn
It is an Android port and works flawlessly on the newest OS. Very simple app that changes your wall paper on a repeating schedule that you select. The wallpapers offered are nice patterns ( thus the name) not images. The patterns do translate well in either landscape or portrait mode. If you have been looking for this sort of thing try it out free in app world.
You can quickly surf the offerings and tag your favorite's and then select favorites in the settings and the app will select only those you have chosen.