KReader is a free book reader app for Android that supports all book formats, including PDF, EPUB, EPUB3, MOBI, DJVU, FB2, FB2.ZIP, TXT, RTF, AZW, AZW3, HTML, XPS, CBZ, CBR, TIFF, Kindle formats, and OPDS Catalogs. This app has a modern interface design with customizable themes, and it can display books as a list or grid. KReader allows you to search and create a library of your books and documents, and it provides features like bookmarks, notes, and text translation.

KReader offers a unique mode for musicians that automatically scrolls notes at any speed, fast transition between previous and next fragments of sheet music, and notes and drawing. Additionally, KReader provides an advanced feature that allows you to open books from zip, export and import all settings, and create a widget on your desktop. This app also supports offline Calibre libraries and online catalogs with search and download books. KReader is localized in 40 languages, and it has a paid version called Kindle Reader PRO without ads.