iPad publisher Inkling is bringing its textbooks and cookbooks to the iPhone. (The company’s Frommer’s travel guides are already available for iPhone.) The books sync across devices and users can download one chapter at a time so they don’t take up too much space on their phones.

Inkling’s interactive ebook publishing platform, Habitat, also now supports iPhone.

Inkling is based in San Francisco and backed by Sequoia Capital as well as major textbook publishers like McGraw-Hill and Pearson.