This document discusses developing mobile apps using hybrid approaches. Hybrid apps are built with web technologies like HTML, CSS, and JavaScript but are wrapped in a native container to utilize device capabilities and be distributed through app stores. The document outlines developing a hybrid app by first creating an HTML app, then compiling it into a hybrid app using a framework like PhoneGap or Cordova. This allows building once and deploying to multiple platforms. PhoneGap provides APIs for hardware features and plugins for additional functionality. Many popular apps have been developed using hybrid approaches and PhoneGap.