Bookinfo, is an really useful app. It helps you to find books and ratings,reviews or price and other details about any book by simply typing or scanning the barcode of the book to find ISBN.
You can see the book details and reviews or ratings in Goodreads through this app.
You can see the book price on Amazon through this app.
You can view other details about the book through this app.
You can also scan ISBN of book through this app.