I have a Kindle Fire HD and have downloaded a book and gotten the reading voice with it. It works fine on the Kindle, but I have not been able to enable the reading on either my mini or ipad 4. Is this function available on the ipads or am I missing some simple thing to turn it on? I do have the Kindle app on both of the ipads already. Is there an additional app needed? The book itself comes over to the ipads, but not the reader's voice for some reason.