Here is a great freebie if you have little ones. You can get Goodnight Moon for iPhone and iPad for free right now.
I highly recommend this book for those that don’t have it. I read this one with my 4 year old- and she reads most of it to me- and it is just the sweetest thing.
I don’t know how long this price will last so grab it while you can.
The rest of the company’s books are 99 cents right now also which, while not free, is a really good price for an interactive book- they’re usually 5-10 bucks.