Nook's iOS app is improving all the time, and the latest update might be its best yet. 

Version 3.4.0 brings support for high resolution magazines as well as Nook Comics, and more options to organize your stuff. iPad owners can use Nook's ZoomView to get a close-up view of each panel, and turn book pages automatically, which is also a key feature of Apple's iBook's app. 

Beyond those improvements, version 3.4.0 is less buggier, more streamlined (especially for PDF files) and easier for downloads in general. 

[via Cult of Mac]