Free listening app usually referred to those applications that provided limited online listening and reading services. These applications usually used streaming technology to stream the audio version of the novel to the user's device over the Internet without the user downloading or installing the application. The business model for free listening apps was usually to earn revenue through advertising or other forms of services. These applications often played advertisements or recommended other paid content to users while listening to novels. While the free listening app may be convenient for users, in some cases, these applications may violate copyright or involve illegal content. Therefore, when using the free listening app, you need to carefully consider the source and content of the app to ensure its legitimacy and security.