This document discusses building native mobile apps with Cordova, Angular, and Ionic. It introduces these tools: Cordova handles the native layer and can build apps for different platforms; Angular is used for MVC and data binding; and Ionic provides UI components with mobile design patterns. It then demonstrates how to create a chat room app with these technologies, using Firebase for real-time data syncing across clients. The document estimates that a basic Ionic app can be made in 1 hour, with additional time spent adding Angular functionality, modifying layouts, and integrating Firebase. Source code for the example chat room app is provided on GitHub with tags indicating different implementation stages.