Book Builder is a nice free iOS app for Reading. This app acts like a Choose Your Own Adventure style book where a picture book is read and then the user gets to decide between two different paths to take. There are two story books to choose from w/ over 30 different endings and each story can be narrated as well. As the narration is read it also highlights the words to help students w/ their Reading skills.
I highly recommend checking out Book Builder by clicking here!!!