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.

🔖 Bookmarks & Reading Progress

- Save bookmarks to any paragraph so you can come back instantly
- Continue reading from where you left off (reading progress)
- When signed in, your bookmarks and progress can sync across devices

✨ More features

Read your own books — Import and enjoy custom ePUB and PDF files with bilingual reading and TTS support.

In-context AI dictionary — Tap any word for richer definitions and examples powered by large language models (LLMs).

Advanced Text-to-Speech (TTS) — Choose natural voices and reading speeds for immersive listening.

Live AI translation — Experience real-time, LLM-based translation as you read.

📚 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.

📖 Explore the Library

Discover bilingual editions of timeless classics:
Pride and Prejudice, A Tale of Two Cities, Twenty Thousand Leagues Under the Sea, Alice in Wonderland, Around the World in Eighty Days, 1984, Animal Farm, Gulliver’s Travels, Oliver Twist, The Little Prince, and more —
plus modern multilingual stories, including official publications from the United Nations.

Bring your favorite books, explore new worlds, 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 4.0.13
- Added spacing between the book language badge and the Private/Public badge on the Uploads tab