Computerworld - Barnes & Noble today released free Nook e-reader software for the iPhone and the iPod Touch, along with updates to Nook software for the iPad that provide content rating capability and more.
The bookseller also sells a Nook e-reader device, but it has always focused on making its collection of 1 million e-books available on other readers and computer platforms, a strategy that not all of its competitors have followed. The company said today that it plans to continue to add support more platforms and devices in the future, but it didn't provide further details.
Barnes & Noble said it designed the Nook iPhone software to take advantage of the iPhone 4's high-resolution Retina display by maximizing e-book cover art and text. The software does work with earlier models of the iPhone and the iPod Touch as well, however.
Nook software is unique in that it allows customers to share certain e-books with other Nook software users for up to 14 days. Nook software is available for desktops and Android smartphones, as well as iPads and now iPod Touch and iPhone devices.
The update to the earlier-released iPad app provides a feature called "Rate" that allows users to rank their books by scoring them on a scale of one to five stars.
Matt Hamblen covers mobile and wireless, smartphones and other handhelds, and wireless networking for Computerworld. Follow Matt on Twitter at 
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