With the “Amazon at the Bookstore” app, you can scan a book or enter an ISBN, and the app will tell you the current lowest price of the book at Amazon.com. You can also search for books on a particular topic.
Get this app on your phone by scanning the QR code below.
If you need a QR code scanner, download ZXing from the Android market on your phone.
Make your own custom version of this app by downloading the source and modifying in App Inventor.
download the zip file but don't unzip.Then in App Inventor choose More Actions | Upload Source
This tutorialfrom the AI book. It provides step-by-step instructions for creating the app.
best in large or full screen, HD