It offers native EPUB support, as well as support for formats including DOC, DjVu, CBT, and CBZ files that a standard Kindle can't display. The Zen UI plugin gives you the best of both worldsThe power of KOReader with a stylish lookCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekClose Credit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekCredit: Adam Davidson / How-To GeekI stuck with the standard KOReader UI for some time. In Zen mode, Zen UI strips away most of the KOReader menus, leaving just a handful of the most useful controls. Zen UI is predominantly designed for more modern touchscreen Kindles, with many of the useful menus accessed with swipes or gestures. I wish I'd jailbroken my Kindle soonerNow that I'm using KOReader with the Zen UI plugin, my Kindle does everything I want from it.