A WebView app is a type of mobile application that uses a WebView component to display web content within the app itself. Essentially, it's like a mini web browser embedded within an app, allowing users to view web pages without leaving the app environment.

Developers use WebView components to incorporate web-based functionalities into their mobile apps, such as displaying web pages, loading online forms, or interacting with web services. This approach enables developers to create hybrid apps that combine native app features with web technologies, offering the best of both worlds in terms of functionality and flexibility.

Android System WebView apps are commonly used for various purposes, including content-rich apps, online shopping platforms, social media clients, and more. They provide a seamless user experience by allowing users to access web content directly within the app, without needing to switch to an external browser. Additionally, WebView apps can leverage the power of web technologies like HTML, CSS, and JavaScript to create dynamic and interactive user interfaces.