I don't understand why isn't releasing a Mac version of iBooks. You can download iKindle for Mac, Windows, iOS, Android and it's connected with Amazon's Cloud service. At home I prefer to read ebooks on my Mac's and not on my iOS devices. I am using most of the time iKindle, but some ebooks aren't available there, but on iBooks. I think to compete with Amazon, should bring iBooks to Mac (and Windows).