Users will be able to access purchased books on most devices with a Web browser, including computers, smartphones and tablets. By comparison, Amazon Kindle owners can purchase books only from an Amazon store, but they can also read them on multiple other devices that run Kindle software and can access free books from other sources. Apple’s iBookstore delivers iBooks to the iPad and to other devices running iOS 4.0 – namely, the iPhone and iPod touch.
Many details of Google's ebook project remain unknown, including who is onboard and what percentage of revenue they will share with the search engine giant. Other relevant information for publishers can be found at the "Getting started with Google Editions" page, including pricing conditions, the option to offer a discounted bundle of paper and electronic versions, and choose whether to apply Adobe-provided DRM controls on downloaded ebooks.