This is an application launcher. It has the functionality to start your applications quickly by voice commands.
Please watch this video for more details: https://youtu.be/RsIKZr5G1sg.
Every when your phone shows its home screen just say the name of the application you want to launch and that application would be launched immediately. If the application was not installed yet and it was a popular application then HxLauncher would download its installation apk automatically.