What’s different about my book?

The Unbound app uses image-recognition technology to make your book come to life on your mobile device. See how it works »

How does this technology work?

Using the Unbound app on your mobile device, scan the specially marked pages in your book to reveal bonus content from your favorite author!

Check out these titles that come to life with HarperCollins Unbound:


Fatal error: Class 'OpenApiBook' not found in /home/harperub/public_html/main/layouts/home.php on line 42