A free program for Android, by Catchy-Apps.

Unicorn Kwai Wallpapers HD 4K is an awesome app with a lot of beautiful and cool wallpapers.

This app will allow you to set any of these backgrounds as your home screen. All images are in high-definition quality, so they will look amazing on your mobile phone.

There are a lot of different categories, so you will not have to spend too much time finding the one you like.

All images are optimized for the most common mobile phones.

There is also an option to set the images as a lock screen. This way, you can change the background whenever you want.

The application is very easy to use.