Given this review: "This app is everything I was looking for  with one exception: I cannot successfully add already-catalogued books to bookshelves. I'm sure it's easy to do once you know how  but the FAQs does not cover it and there are no instructions. Perhaps you are supposed to add books directly to the desired bookshelf? If so  is there a way to move a book to a different shelf if you change your mind later? This app is still great  I'd change rating to 5 stars once clarification is provided." Would you recommend this app to a friend? Not at all, No, Maybe, Yes, or Definitely?
A:
Yes