Created by Google, and currently the property of the Massachusetts Institute of Technology (MIT), App Inventor is an application development environment (ADE) for Android. Intended to teach beginner programmers how to create and develop simple applications, it's a straightforward and intuitive interface that uses blocks of color and different shapes that fit together like a jigsaw puzzle. This easy-to-follow guide gives children step-by-step instructions for producing their own projects using the latest version, App Inventor 2. It focuses on video games, game rooms, stories, quizzes, and finally, animation, music, and colors, showing kids how to personalize their work using all the potential of this incredible open-source tool.