This Apps working together with O2O book that you can find on local bookstore. O2O book is a special book that you can make a digital copy of your physical book, so you never missed and loose your book. The standard free account can keep book for 2 years. This apps has feature: 1. Scan/capture pages for o2obooks, and organize it. 2. Using smart sticker for book tagging. 3. Bookmark your book. 4. Edit pages. 5. Share / Unshare book between account. 6. Email pages. 7. Add photo to book pages. 8. Search by bookmark/tag. 9. Sort book title. 10. Cloud Sync across device. This Application is free with full version, so you can use it everyday. For term and condition please see: http://www.o2onote.com/tnc Thanks for using this apps.