The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Unbound Concepts, LLC:
BookLeveler helps educators, parents, and librarians quickly and easily find appropriately leveled content for young readers. App users can scan the ISBN barcode of a book or search for content by title and/or author to appropriately level and store that content based on their in-classroom experience. BookLeveler provides three categories of A-Z levels for each book: your leveled library, teacher-trusted crowd-sourced levels, and text-analysis-based Meridian levels. We believe that educators instinctively know the level of a book, we have designed this application to crowd source this professional knowledge. Meridian then uses this knowledge to predict the level of similar books. Therefore our A-Z levels are constructed with your help! The more levels you submit, the better the results will be for determining levels of books.