illuminsight is described as '💡 illuminsight 👀 effortlessly generates insights for selected text within your EPUB-format books, showing you relevant, contextualized data at a glance' and is a eBook Reader in the News & Books category. There are more than 25 alternatives to illuminsight for a variety of platforms, including Android, iPhone, Windows, iPad and Mac. The best alternative is calibre, which is both free and Open Source. Other great apps like illuminsight are Amazon Kindle (Free), FBReader (Freemium), Moon+ Reader (Freemium) and Apple Books (Free).
iReader is a offline e-book reader for Android. It also reads PIM data. iReader opens fast, searches fast, and can handle large files. Supports TXT, CHM, PDB(EReader, Mobipocket), UMD(popular Chinese ebook format), HTML and Image files.