PlayTales Children Books is an app that is great for early readers. Each book is interactive and has learning games inside the stories that are designed to reinforce student reading skills.
Two free books come with the app, and there are other free titles available. Other books cost between one to two dollars, but you can preview demos of the “New And Noteworthy” books before deciding to buy them.
If you add yourself to the PlayTales mailing list via the website, you will be entitled to another free book.