iStoryBooks is a service that I reviewed a couple of years ago when it launched on iOS and Android. Now it's available as a Windows 8 app too. iStoryBooks offers dozens of children's stories (some free, some for sale) like The Ugly Duckling. The app gives you the option to read each story or to read along with each story while listening to the narrator.
Applications for Education
If you have or teach children under eight, iStoryBooks could be a great
app to install on your iPad or Android-powered tablets. Children can
practice reading and recognizing words by going through the stories with
the narration turned on. Or you can turn the narration off and read the
stories with your child or student.