Google today launched their new Google ebookstore and Google Books app (free). They say that the store has over 400,000 books available for purchase and over 2 million free ebooks. As is typical, the app lets you change the font and search inside the book. It also has night-reading mode and offline reading mode. Your books are stored in the cloud. Read more about the using the iOS app on their website. And CNET has a great article about this new Google offering.