duoBooks: Read & Translate

duoBooks is a bilingual ebook reader for learning languages through reading. Read books, short stories, and EPUB files with instant translation into your native language.

Whether you are learning English, Spanish, French, German, Italian, or another language, duoBooks helps you understand every sentence, build your vocabulary, and improve your language skills naturally.

Read any EPUB ebook from your device or choose from our library of 3000+ books and beginner-friendly short stories.

duoBooks is designed for language learners who want to practice with real texts, parallel translations, pronunciation, and vocabulary review in one simple app.

Read foreign-language books with translation sentence by sentence. Tap any sentence to see its translation into your native language.

You can also break sentences into clear parts and understand how each word works in context. See word meanings, sentence structure, and full translations while you read.

This makes duoBooks useful for beginners, intermediate learners, and advanced readers who want to improve comprehension while enjoying real books.

Import your own EPUB files

Already have books, study materials, scientific articles, or programming books in EPUB format? Add them to duoBooks and read with translation.

Many learners use duoBooks as an EPUB reader for English books, technical materials, academic texts, and classic literature.

As long as you have an EPUB file, you can turn it into a bilingual reading experience.

Build your personal dictionary

Save useful words and phrases to your personal dictionary.

Keep your vocabulary in one place and review it whenever you want. Every saved word stays connected to your language learning journey, helping you remember what you have learned from real reading.

Learn words with spaced repetition

duoBooks includes a Spaced Repetition tool to help you memorize vocabulary more effectively.

Review words at increasing intervals and swipe through flashcards to strengthen long-term retention. This makes vocabulary practice easy to include in your daily routine.

Use duoBooks to build your English vocabulary or expand your vocabulary in Spanish, French, German, Italian, and other languages.

Listen to pronunciation

Correct pronunciation is essential for language learning.

With duoBooks, you can listen to audio voiceovers of sentences and individual words. Hear how words and phrases are pronounced and improve your listening and speaking skills while reading.

Learn languages by reading

Reading with translation is one of the most effective ways to improve language skills.

With duoBooks, you can:

Read books in English, Spanish, French, German, Italian, and more
Translate sentences instantly
Understand words in context
Listen to pronunciation
Save vocabulary to your dictionary
Review words with flashcards
Practice grammar through real examples
Import your own EPUB books
Read beginner stories and classic literature
3000+ books and stories

With thousands of available books and the option to import your own EPUB files, duoBooks gives you endless opportunities to practice reading in a foreign language.

Perfect for English learners

duoBooks is especially useful for people learning English as a second language.

Read English books with translation, study vocabulary, listen to pronunciation, and understand difficult sentences step by step.

You can also use duoBooks to learn other languages, including Spanish, French, German, Italian, and more.

Why choose duoBooks?

duoBooks helps you:

Read foreign-language books more easily
Learn new words from real context
Improve reading comprehension
Practice pronunciation and listening
Study vocabulary with spaced repetition
Build a personal dictionary
Read EPUB books from your device
Learn English or other languages through daily reading

Turn every book into a language lesson.

Start reading, translating, listening, and learning with duoBooks today.