If you do not have an Android device, you'll need to install software on your computer so that you can use the on-screen Android emulator. You will need to install the App Inventor Companion App on your device. If you are using an Android device and you have a wireless internet connection, you can start building apps without downloading any software to your computer. You have three options for setting up live testing while you build apps
To see your app on a device while you build it (also called 'Live Testing'), you'll need to follow the steps below. The Designer and Blocks Editor run completely in the browser (aka the cloud). You can set up App Inventor and start building apps in minutes.
