It can also automatically download and save an applied wallpaper to your PC. The app automatically changes your desktop and/or lock screen wallpaper but you cannot select an interval manually. Also, like 9Zen, it allows you to select your region for the Bing Daily wallpaper. You can also add your own local collection to the app. Like 9Zen, Dinamic Wallpaper brings you wallpapers from a variety of different sources which include Bing, 500px Pulse, 500px Macro, and NASA Astronomy. If you want more you’ll need to buy the full version for at least $2.99. It’s a free app but it is ad-supported and only allows 2 collections each with 30 wallpapers. You can also create a collection of your favorite wallpapers, change the time interval at which wallpapers change, etc. You can set a region for Bing daily images and also set them as your desktop and lock screen wallpaper so that you have a new wallpaper every day.