I have the Kindle app on both my iPad and my Droid phone. Both devices sync to the kindle library so all my books are available on both devices. I will say...and this may sound odd...I read more on my Droid phone than I do on my iPad. I always have my phone with me while the iPad is not always with me. And as stated in one of the first responses there are just too many other options to do other things on the iPad.