MIT App Inventor is an educational tool to learn computational thinking and computational action principles through building mobile apps. Used by over one million people worldwide every year, it is one of the premier platforms for computer science education. Use this companion app to test drive projects, debug blocks code, and show your friends and family your creations. Using a blocks based programming language, design and code your own projects, or use one of the many books and curricula to learn about coding. App Inventor also includes built-in tutorials for running student workshops. This version of App Inventor includes over 60 components, from user interface elements such as buttons and switches, to sensors, connectivity and multimedia components so your projects can interact with the world.