I'm just downloading it now. I'll modify this post when I've read through the story.
>Edit<
Ok, I've watched it through several times on my Galaxy Note. It seems to work quite well. The word highlighting seems to work; and I quite like the way the page scroll works, but it seems odd that it only does it every other page (Although I can see why it happens like this)
I'll test this on my other 2 android devices shortly; and in the morning I'll let my little girl have a look and see what she thinks
>Edit 2<
Tested on my Tab 2 7.0 with the same results; app ran smoothly and the buttons were responsive.
When I tested it on my Galaxy Y (Much lower spec, tiny screen etc) I had some problems. Although the book ran fine and the writing was readable it was very pixelated.
I also had problems pressing the exit button when the "Press to Start" message was there. I kept clicking that by mistake.
I also let my daughter watch/read it on the tablet. She managed to use it on her own and listened to the story a few times before I could get my tablet back
My only real suggestion would be a way of "pausing" the story?
But other than that, good job