An Android Launcher is an application that changes the home screen and app drawer of an Android device. It allows users to customize the layout, icons, and overall appearance of their device's interface. Launchers can enhance user experience by providing additional features like widgets, themes, and shortcuts. Many Android Launchers are available on the Google Play Store, offering various styles and functionalities. Popular options include Nova Launcher, Microsoft Launcher, and Action Launcher. Users can choose a launcher that best fits their preferences, making their device more personalized and efficient for daily use.