I have created an app with 9 fairy tales where you choose the main character, give it a name and at curtain points in the book, you choose where the store goes next.
It gives you more than 200 possible ways to read the fairy tales. There is also a print and color section.
An update is in the making where the print and color section will be greatly extended and other surprises too.
NO IN APP PURCHASE REQUIRED.
Check it out: