A free app for Android, by Captaindroid.

Android 12 Launcher is a top-class, highly customizable home screen and desktop experience. It is the most stable, smooth, and beautiful stock launcher ever. This launcher is directly extracted from the Android 12 OS and added some extra ingredients to increase its awesomeness. It can also change the wallpaper of your phone automatically every hour, which is of course customizable. It also comes with a huge collection of customized Google feeds and plugins, which you can use on the leftmost screen. If you use it, you won’t uninstall this launcher again.