Download link: iTunes
Wonderful Wallpapers HD app will help you quickly and easily provide your iPad with beautiful wallpapers. There are many wallpaper clients presented in AppStore but this app, in my opinion, is the handiest one. The app features various categories of pictures: Nature, Celebrities, Abstract, Animals, Universe and many others. When typing each category icon, you get the entire list of pictures this fold contains. All movements are usual and intuitive.
So, tap the picture and set it either as wallpaper or screen saver, but in fact you just save the picture to your media library. In order to set it as background, use settings. The app contains over 500 original wallpapers of high quality and costs mere $0.99.
Here are some pictures from the app: