Duoreader - Bilingual Books

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About this app

Duoreader — Read, Listen, and Learn Languages Smarter

Duoreader makes it easy to read bilingual texts by aligning translations sentence-by-sentence. Seamlessly switch between two languages as you improve your understanding — and experience the beauty of the original works side by side with their translations.

📖 Read anything you want

Free, with no ads. Duoreader translates what you read as you go. Whether the text has a human translation or not, you always read it side by side in two languages.

🔤 Word-by-word alignment

Tap a sentence to line up both versions word by word and see exactly which phrase maps to which.

📖 AI dictionary

Tap any word for a definition that fits the sentence you are reading.

🔊 Text-to-speech (TTS) & read aloud

Listen with natural voices and adjustable speed, and follow along as the text highlights.

📚 78 classic books, in 11 languages

• Translations into Chinese, English, French, German, Spanish, Italian, Arabic, Japanese, Russian, Korean and Polish
• Austen, Dickens, Orwell, Hemingway and more — read them as they were translated, or let Duoreader translate for you

🌐 1,400+ websites, 24 languages

• Browse by topic — news, science, tech, health, culture, history, travel, food, sport, finance and more
• Read any article in your own language, even where no translation exists yet
• Prefer a site of your own? Paste the URL

📥 Import your own books

Import your own ePUB and PDF files and read them the same way, with bilingual reading, dictionary and TTS.

🔖 Bookmarks & Library

Filter by level and language, and save a bookmark on any paragraph to come back to it later. Your progress and bookmarks sync across devices when you sign in.

📚 Read and Learn

Duoreader supports many languages — Chinese, English, French, Spanish, Italian, Japanese, Arabic, Russian, and more to come.
Whether you're a beginner or a fluent reader, Duoreader helps you explore literature while strengthening your language skills.

Bring your favorite books, read something new every day, and learn languages naturally — all within Duoreader.

Ratings and reviews

I am delighted to have discovered this amazing app. There is a library of books from which to choose. To be able to upload content written at the language level at which one is studying is tremendously helpful. The translation of the text is immediate, and the layout of that text with the original is excellent. Audio playback of the text is very simply done, and there is a large choice of voices reading in different styles to choose from. Pretty well faultless. Highly recommended.

I found the selection of books very good - plenty of Russian classics. Reading and sound quality excellent. There are plenty of options on the menu to adjust voice, reading etc. However, the app lacks a possibility of bookmarks, which makes finding the place where you leave off reading difficult. There is also no possibility to search within the text.

Doesn't work and the languages are only the ones that are shown, there's not more than that even though they specifically implie that there is and you can't even choose the books because they are all grayed out, there's no search function so you have to scroll through it all, there's limited functions and overall it sucks. I do not recommend it.

What’s new

What's new in 5.2.2
- Book covers on the home screen no longer flicker
- The home header now clears the status bar when it sticks to the top
- The Discover tab no longer shows two category bars at once
- Smoother scrolling (removed a stray background timer)