Wow! You have learned a great deal about the App Inventor platform in this chapter and you have built and programmed your first app! This is a huge accomplishment! But, as you may have noticed, we have an issue to fix. We will demonstrate not only how to debug your first bug, but also how to add more features. Really, this is just the beginning of your mobile computing adventure. There is much more to learn and create! Our Fling app is functional and simple, but I'm sure you can think of countless more features to enhance it. In the next chapter, you will learn how to expand the app's complexity by creating a scoring mechanism that is displayed when the ball touches the top edge, by allowing the ball to be flung only from the lower half of the screen, and by creating levels and increasing the speed of the ball

By learning how to add more functionality to an existing app, you will gain experience developing multiple versions. This process of building an app with added features is what...