The application for reading and cataloging books, textbooks, reference books and documents in DjVu and PDF formats in a modern, user-friendly style. Designed mainly for working with technical, scientific and educational literature. COMFORTABLE READING MODE • Crops a page margins in manual and automatic mode. • Themes, color schemes for reading (day, night, sepia and more). • Page turn with scroll, curl and slide. POWERFUL ANNOTATIONS • Notes, stickers and scraps. • Drawn annotations (Apple Pencil support and just by touching). • Exports annotations in HTML, PDF, RTF formats. • Synchronization of annotations and drawings in iCloud. • Unified view and management of all annotations in all the books at once. BUILT-IN THE SUMMARY EDITOR • Markdown formatting. • Exports summaries in HTML, PDF, RTF formats. • Synchronization of summaries in iCloud. ADVANCED FEATURES FOR DJVU • Text recognition of pages in DjVu (for documents without OCR layer). • Splits a scanned double-page spread in DjVu into separate pages. WORKING WITH FRAGMENTS OF TEXT • Translation of separate words or complete sentences in different languages. • Full text searching in a book (textual, fuzzy and regular). • Built-in search for a selected text on the Internet, Wikipedia and Wolfram|Alpha. • Search for a word definition in a dictionary. • Text-to-speech in books. • Smart zoom by double-tap. CATALOGUER • Grouping by categories: by authors, subjects, sequences, publishers, tags, popular, recent, new, read and reading now. • Using tags to categorize documents. • Customizable search for books in the library by various metadata fields in different modes. • Search for textbooks on the Internet through arXiv.org, Library Genesis and Google. • Own folders tree and flexible bookshelf settings for layout and sorting. • Arranging books on a bookshelf by dragging. WORKING WITH A METADATA AND A TABLE OF CONTENTS OF A BOOK • Automated extraction of a metadata from PDF and DjVu. • Convenient editing of a metadata. • Editing and creating a table of contents in manual and automatic mode. • Synchronization of a metadata and a table of contents in iCloud. STORAGE • Locally on the device. • In the Cloud Storage (iCloud Drive, Google Drive, Yandex Disk). • Content server for accessing files on the device via a local network. • Import files from shared folders in the local network. • Export files.