Digital textbook platform Boundless has released an iPhone app that gives students access to free digital textbooks as well as premium digital textbooks for a subscription fee. Prior to releasing the app, students could only access the service through Boundless’ online platform.

The mobile app brings the online experience to the iPhone by giving students access to online versions of their textbooks. The app lets students align their assigned textbook “chapter by chapter, section by section, so that you don’t need to buy your book. Our experts use the best of the internet to bring affordable textbook alternatives to you.”

The digital textbooks allow readers to search inside of them and feature concept summaries. Students can pay $20 for premium access which includes interactive study materials such as flashcards and chapter outlines and quizzes to help students test their knowledge. (Via Engadget).