Anonymous30 if you think about it it’s called Nothing OS (OS = Operating System) for a reason. Inside Nothing OS there is a launcher, which is an app that all Android devices need to function.
This is the explanation by CoPilot:
“The launcher in Android is like your phone’s personal assistant for organizing and displaying your apps and home screen. It’s the user interface that you interact with to launch apps, make calls, and access various features. Think of it as the front door to everything on your phone. It’s the thing that lets you swipe between screens, press icons to open apps, and customize your home screen layout.”