A free app for Android, by Nu-Kob.

The Home Button is an Android home screen widget. It is an essential component of the user interface and is present in every Android device. It allows you to quickly change the current screen and launch your favorite applications. You can customize the button with different themes and colors. It also supports the use of a photo as the background.

You can use the Home Button to open your most used applications. You can set it to open your app list, settings, the browser, the browser control, and other applications that you use frequently. You can also set it to open the application you want to use right now.