SB Erlangen is a free iPhone application developed by subkom GmbH, designed to provide convenient access to the online catalog and member account of the Stadtbibliothek Erlangen. Users can utilize various features offered by the app, such as searching the library's catalog, creating a wishlist for media, viewing borrowed items, reserving media, extending loan periods, canceling reservations, accessing library information including opening hours, and utilizing the Onleihe service.

The app, developed on behalf of the library and distributed by subkom GmbH, aims to enhance the user experience for patrons of the Stadtbibliothek Erlangen, offering a range of functionalities to facilitate library interactions on the go.