Randim is a free app that has a large verities of 4K (UHD | Ultra HD) as well as Full HD (High Definition) wallpapers | backgrounds. It gives you an opportunity to set wallpaper by tags automatically. It's searching images on the internet by tags and setting them as wallpaper.
What wallpaper do you want? Randim can find any image and set it as wallpaper.
App is designed for Android phone & tablet, so app works on any screen sizes or screen resolutions. Note: Live Wallpaper is a inbuilt service in Android System which is used for changing Backgrounds Automatically.
This awesome app lets you set the time gap where the image changes with a fully automated timer!

This wonderful app gives an enticing look to your phone with your favorite images sliding on your mobile screen.

This is why we launched Randim, a creative wallpapers app, to make sure you always have a cool wallpaper at hand. We think it’s important that you can easily find inspiring and beautiful wallpapers that will make you happy and feel great every time you pick up your phone.