Barnes & Noble has released an iPhone version of its Nook e-reader software introduced for the iPad earlier this year. The Nook e-reader apps feature access to over a million titles from Barnes & Noble’s eBookstore, multiple font types and sizes, customizable background and text colors and brightness controls. Nook also provides an integrated Merriam-Webster Pocket Dictionary, synchronization of notes, highlights and current reading position and provides a unique LendMe digital lending feature that allows users to share their purchased eBooks with friends using the Nook platform. Nook for iPhone provides the same features offered in the iPad application optimized for the iPhone’s smaller screen and iPhone 4 Retina Display and includes integrated B&N eBookstore shopping, personal B&N digital library access, digital lending features and the ability to sync notes, highlights and current reading position with other Nook apps. Barnes & Noble has also released an update to its iPad application, renaming it from BN eReader to Nook for iPad and adding the ability for users to rate their books and sort by favorites as well as a user guide and first run tutorial for new users. Nook for iPhone and Nook for iPad are available separately as free downloads from the U.S. App Store.