4K Wallpapers (UHD) is an Android application developed by Wallpapers4K that offers a vast collection of over 5,000 high-quality wallpapers with a 4K resolution. The app provides a wide range of wallpapers in 50 categories, including Christmas, animals, sports, and more. With 4K Wallpapers, you can enjoy the benefits of a high resolution, such as huge zooming without any loss of quality, and the ability to make clippings of objects like the cosmos with no loss of quality.

The app also offers a search engine for 3D wallpapers, the ability to create your own database of favorite wallpapers, and sharing options via email, SMS, and social networking sites like Facebook and Google+. Additionally, the app has an animated loading screen and browsing feature that makes it easy to navigate through the wallpapers. With support for screen rotation and all screen resolutions of phones, tablets, and even televisions in 4K resolution, 4K Wallpapers is a must-have app for anyone looking for high-quality wallpapers on their Android device. Best of all, it's completely free to use.