qView vs ReadEra

qView is a free, open-source image viewer designed to keep the image prominent, with a title bar and no toolbar clutter. It supports common formats including BMP, GIF, JPG, PNG, TIFF, and WebP, as well as RAW images and color management. For browsing, it includes animated GIF controls, file history, rotation, mirroring, and multithreaded preloading. Preferences are configurable. The maker describes qView as quick to open and light on memory and CPU. It is based on Qt5 and licensed under GPLv3, with a listed price of free. Windows downloads include 64-bit installer, 32-bit, and standalone options; the installer requires Visual C++ 2015 or later. macOS options include a DMG for macOS 12 or later, a legacy download for macOS 10.13 or later, and Homebrew. Linux choices include distribution packages, AppImage, Flatpak, and a source tarball. The download page also links to bug reporting, Discord, translation contributions, and nightly builds.

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.