Build the HelloPurr App


Touch the kitty to make it meow! This is the "Hello World" of App Inventor, the first app most people build. You'll learn that app building is about specifying responses to events, in this case playing a "meow" sound in response to a button click.

 
screenshot
Scan this QR code to download the app

Check out the app and what you'll learn.

Looks best in full screen.

Upload the kitty image and meow sound file, then build the user interface with a Canvas and Sound component.

Looks best in full screen.

Drag out a Canvas.Dragged event and then plug in a Sound.Play call

Looks best in full screen.

Use the App Inventor companion to install the app on your phone

Looks best in full screen.