From the press release:
Vital Source Technologies, Inc., the leading e-textbook solution provider for publishers, academic institutions and students today announced the availability of the VitalSource Bookshelf application for Apple’s iPad™, iPhone®, and iPod Touch®.
With the addition of the new VitalSource mobile app, students and faculty can access their content three convenient ways—via integrated download, online, and mobile devices. Notes and highlights made on other VitalSource Bookshelf platforms are synchronized with the new VitalSource Bookshelf iOS app. The VitalSource Bookshelf e-textbook app is free and available from Apple’s App Store at www.itunes.com/appstore
Using the new VitalSource Bookshelf® iOS app, the full e-textbook, student notes and highlights are downloaded to the device, making it unnecessary to be connected to the Internet to access the full content. VitalSource Bookshelf is the only digital textbook platform providing synchronization across download, online and mobile delivery methods.