Last night, Kno quietly released its first digital textbook app for the iPad. It includes its own store of "over 700,000 titles at 30% to 50% off list" price. And the app is a full textbook reader. The iPad app allows you to organize your digital textbooks and PDFs by dragging and dropping them into "courses." Once you open a textbook, you can swipe through the pages or navigate via a filmstrip of thumbnails up top. There is also full text search. Pages can be bookmarked and highlighted. You can also add digital sticky notes which pop out from the margins.