In this chapter, you will learn how to design and develop a complete app (the Mega App) using Apache Cordova and jQuery Mobile APIs. Mega App is a memo utility that allows users to create, save, and view audible and visual memos on the three most popular mobile platforms (Android, iOS, and Windows Phone 8). In order to create this utility, Mega App uses jQuery Mobile to build the user interface and Apache Cordova to access the device information, camera, audio (microphone and speaker), and filesystem. In this chapter, you will learn how to create a portable app that respects the philosophy differences between Android, iOS, and Windows Phone 8.