Why KOreader? And why, yes. : r/ereader (opens in new tab)

night mode read pdfs read epubs (no conversion required) direct calibre connection over wifi (just clickling on send to device in calibre and it's there) custom dictionaries (I have multiple dictionaries and more complete than the stock one) custom fonts (Atkinson Next ftw) way more options to format your book (e.g.: multiple columns, line spacing, paragraph spacing) directly from your ereader and saving it in different profiles for different types of books custom screensavers very customizab...