When you launch Classics, a bookcase appears with books facing outward. In a perfect world, every book would look like the volumes formatted so elegantly for Classics. You should be able to read in either portrait or landscape mode. The interface should be clean and the text should be fully scalable, with a wide variety of typefaces, text colors and backgrounds to choose from. StanzaThe goal of every reader app should be to make the reading experience as easy on the eyes as possible. Here’s what I look for in a reading app: Attractive, flexible interface None of the reading apps in the App Store is perfect, and I’ve tried most of them. (Click on the product name to see our full reviews of each product.) BookShelf (, $6, Zachary Bedell ( App Store link).Kindle for iPhone (, Free, ) ( App store link).iFlow-based books (, various prices, BeamItDown) ( App store link).eReader (, free, Fictionwise) ( App store link).Classics (, $3, Andrew Kaz and Phill Ryu) ( App store link).Instapaper (, free Marco Ament) (App store free and pro versions).Stanza (, free, Lexcycle) ( App store link).The most relevant reading apps on the iPhone today are: