FBReader vs Skybrary

FBReader is an ebook reader for Windows, macOS, Linux, Android, and iOS. It opens formats including ePub, fb2, mobi, HTML, RTF, and plain text, as well as ePub books protected with Readium LCP. Its Book Network can synchronize collections, reading positions, bookmarks, and custom shelves across supported devices. Books in the network are stored in the user's Google Drive space, while metadata, covers, and reading positions are stored on FBReader servers.

Online OPDS book catalogues are supported on Android, Windows, macOS, and Linux; iOS support is planned. Android Premium adds PDF and comics support, Google and DeepL translation integration, and automatic reading aloud. The free iOS version is limited to ten books and disables online translators. FBReader offers free plans for desktop, Android, and iOS; Android Premium is $14.99 as a one-time purchase. The company says its current code is closed source.

Skybrary is a reading app for children ages 3–9, with eBooks and virtual field-trip videos on Android, iOS, and the web. Its free plan includes 100 books, 50 adventure videos, up to five child profiles, reading progress tracking, and offline access. The paid family library offers 1,000+ handpicked books and 150+ virtual field trips. Read-aloud narration and text highlighting support reading practice, and children can save books for offline use. A Family Dashboard tracks lifetime minutes, completed books and videos, and recent favorites. Educators have dashboards, reading reports, lesson plans, roster tools, and classroom management features; school accounts can use Clever rostering and sign-in. The Classroom Plan is for classes of up to 35 students, while the School Plan supports up to 350 students and 10 classrooms. Skybrary says it does not display ads or sell student data to third parties. A 30-day trial is listed, and paid family plans start at $6.99 a month. Virtual field trips do not currently support closed captioning.