Biblyx

Biblyx is an EPUB, PDF and TXT reader with translation for language learners. Open your own books in the language you are learning, or paste any text, such as an article or a story, and tap a word: AI translates it to fit that sentence and shows a short dictionary entry with the part of speech, the base form and an estimated CEFR level (A1–C2). When a word is part of an idiom or expression, both meanings are shown and either can be saved. Nouns in German, Spanish, French, Italian and Portuguese come with their article, compound words are split into parts, and a selected sentence or passage can be translated as a whole. Words and sentences can be read aloud with the phone's text-to-speech voices.

Saved words and expressions become flashcards that keep the sentence from the book. Cards return after 1, 3, 7, 14 and 30 days, then at longer intervals, and a forgotten word starts again. Vocabulary can be exported to CSV or as an .apkg file for Anki. Biblyx works well for learning through comprehensible input: lots of real reading, with help on the words you don't know yet.

The reader has a table of contents, search, bookmarks, highlights in four colors, light and dark mode and auto-scroll. For a first read, 29 short stories and tales in 10 languages are built in.

Books in English, German, Spanish, French, Italian, Russian, Polish, Portuguese, Turkish and Azerbaijani, plus Swedish, Dutch, Ukrainian and Tajik in beta; the interface uses the same 10 languages. No account is needed to read and translate. Signing in with email or Google syncs saved words, review progress, reading position, bookmarks and highlights between devices; book files are not uploaded. Reading and flashcard review work offline; looking up new words needs a connection. Reading, flashcards, export, reminders and sync are free, and there are no ads. AI translations use a daily allowance; Premium removes the daily limit (fair use applies). Android only for now.

Learn languages by reading your own books.