Apple has released a version of its iBooks app for iPhone and iPod touch models running iOS 4. Up until now, iBooks was only available for the iPad.
The eBook store and reader joins a crowded field of eBook apps for the iPhone. Amazon, Barnes & Noble, and Kobo (Borders) already offer apps for the iPhone and iPod touch. And there are a number of other free eBook apps that let you download free and paid books from the internet.
There is one killer feature that iBooks has that others don’t, though: integration with iTunes. That means you can pay for books using the same iTunes account that you use to pay for music, movie, and app purchases. It also means that you can browse and purchase content without leaving the iBooks app. (Take that, Kindle app.)