The Nook app by Barns and Noble offers reading of any book purchased via your Nook. If you still want to read it, just download the app and begin reading. Nook extends itself from the Nook product itself onto the iOS platform creating a great reading experience via this custom tailored app.
iTunes Description:
Get the most incredible reading experience for your iPad, iPhone and iPod touch®. Access over 3 million books—including 1 million FREE titles—plus magazines, newspapers, comics, and more. Sample NOOK books FREE and try any newspaper or magazine FREE for 14 days.*
Shop the NOOK Store and find titles tailored to your interests with ultra-personalized recommendations we know you’ll love. Then, enjoy an amazing, highly optimized reading experience with your NOOK app™ wherever you go. Start reading on one device and continue on another.
NOOK Everywhere – the top-rated app for readers.