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Chapter 2 - Basic App Concepts

Chapter 2: Basic App Concepts

Let’s Explore App Basics!

Now that you know what an app is, it’s time to learn about how apps work. Every app you use is made up of parts like icons, buttons, and screens. These parts help you do things like play games, watch videos, or learn new things. In this chapter, we’ll explore these important pieces and even start designing your own app using a tool called MIT App Inventor!


The Role of Buttons and Icons in Apps

Every app has buttons and icons that help you navigate and use the app. Here’s how they work:

  1. Icons:
    Icons are little pictures that tell you what a button does. For example:

    • A house icon might take you to the home screen.
    • A gear icon usually opens the settings.
  2. Buttons:
    Buttons are things you tap to make something happen. For example:

    • In a game, a button might make a character jump.
    • In a music app, a button might play or pause a song.

Think about the apps you use every day. Can you spot the icons and buttons? What do they do?


Learning how to navigate an app means understanding where to go and what to do. Here are three important things to know:

  1. Home Button:
    The home button takes you back to the main screen of the app.

  2. Back Button:
    This button lets you go back to the screen you were on before.

  3. Settings:
    Settings is where you can change how the app works, like turning sounds on or off.

By understanding these buttons, you can explore apps more easily!


What Makes a Good App?

Great apps are easy to use and fun. Here are some simple design principles:

  • Colors: Apps use bright, happy colors to make them exciting.
  • Shapes: Buttons and icons are often simple shapes like circles or squares.
  • Usability: Great apps are easy to navigate, with clear buttons and simple instructions.

When you start designing your own app, remember these tips!



Apps are made up of many small parts, but when they work together, they make something amazing! In the next chapter, we’ll start building a simple app that you can share with others. Get ready to create! 🎉