New: Custom books, smart dictionary, AI translation

Master Languages with
Bilingual Reading

Match translations sentence-by-sentence. Switch between two languages instantly and experience the beauty of original texts.

Or try the Web App

Duoreader uses AI for sentence-by-sentence alignment so you can read world classics and articles with ease. Import your own ePUB and PDF files, use the smart dictionary and AI live translation, and listen with advanced TTS. Supports Chinese, English, French, Spanish, Italian, Japanese, and more.

Powerful New Features

Everything you need to read, listen, and learn effectively. Now with AI integration.

Custom Books

Import and read your own ePUB and PDF files directly in the app. Your library, your way.

Smart Dictionary

Powered by ChatGPT for richer, more natural explanations of vocabulary in context.

Advanced TTS

Listen with multiple natural voices and adjustable reading speeds to improve listening.

AI Live Translation

Real-time bilingual reading powered by large language models for accurate context.

Enhanced Library

Book filtering, detailed info pages, and infinite scrolling for seamless discovery.

Completely Free

All content is provided free and ads-free. Enjoy reading without interruptions.

A World of Classic Literature

Dive into our extensive collection of classic books and modern content from sources like the United Nations.

Supported Languages

Arabic Chinese English French German Italian Japanese Russian Spanish
Browse Full Library

Featured Classics

  • Pride and Prejudice
  • A Tale of Two Cities
  • The Old Man and the Sea
  • Oliver Twist