ReadEra vs Universal Viewer

ReadEra is an app for reading books, magazines, articles, and documents without ads or registration. It opens formats including EPUB, MOBI, AZW3, FB2, PDF, DjVu, DOC, DOCX, RTF, ODT, TXT, CBR, and CBZ, along with files inside ZIP or RAR archives. The app detects books and documents and organizes them through reading lists, author and series groups, collections, sorting, and folder tools. Readers can add bookmarks, quotes, notes, translations, dictionary lookups, and text selections. Controls include search, contents, page history, display modes, and settings for fonts, margins, hyphenation, zoom, brightness, and rotation. Multiple books or documents can be read at once, including in split-screen. Kids mode offers a simplified interface, parental control, and child-specific filtering and collections. Premium syncs books, documents, progress, bookmarks, and quotes with Google Drive, and adds background text-to-speech. ReadEra is available on Android, iOS, and macOS. The free plan costs nothing; Premium costs $14.99, paid once.

Universal Viewer is a Windows desktop application for opening a wide range of file formats in one viewer. It handles images, multimedia, Word and Excel files, PDF, RTF, internet formats, text, and formats supported by Total Commander Lister plugins. Image support includes over 40 graphics formats and RAW images from 400+ cameras; its multimedia player supports over 170 formats without external codecs. In the Pro version, Word and Excel files including DOCX and XLSX open without MS Office, and a PDF plugin works without Adobe or Foxit Reader. Pro also adds complex RTF and RAW image support, an image panel with a Convert to feature, and highlighted text search. Text mode handles files of unlimited size, including those over 4 GB, with encodings such as Unicode and UTF-8. Windows Explorer context-menu integration provides a way to open files in the viewer. The free edition’s multimedia support depends on the Windows Media Player engine. Listed system requirements include Windows XP, Vista, 7, 8, 10, and 11. The Pro version has a 15-day trial; paid access starts at $26.