# duoBooks: Language Learning — Learn Spanish by Reading Books

> Bilingual ebook reader with instant translation, vocabulary builder, and pronunciation tools. (iPhone/iPad app by PlainProg LLC.)

- Source: https://appshunter.io/ios/app/duobooks-language-learning/id1538452253 (this page in markdown: same URL + `.md`)
- Developer: [PlainProg LLC](https://appshunter.io/developer/1538452255)
- Category: Education, Books
- Price: Free with in-app purchases
- Rating: 4.70/5 from 44 App Store ratings · 34 written reviews indexed
- Age rating: 12+
- Requires: iOS 15.0 · 42 MB
- Languages: Russian, Albanian, Armenian, Azerbaijani, Bangla, Bulgarian, Georgian, Hindi, Serbian, Slovenian and 31 more
- Released: 2020-11-08
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/duobooks-language-learning/id1538452253/reviews.md

## What is duoBooks?

Read any book in any language with instant translation into your native language.

We offer short stories designed specifically for beginner language learners. Alternatively, you can add any book from your device and read with translation whatever you want.

Break any sentence into clear pieces and see every word explained in context. Instantly understand how the sentence works, what each word means, and how it fits into the full translation.

In our app, you will also have your personal dictionary where you can keep your vocabulary in one place and easily review it whenever you want.

Mastering correct pronunciation is key to language acquisition. In our app, you can listen to audio voiceovers of every sentence or word to hear it pronounced accurately. Immerse yourself in language learning with ease.

To learn words, we provide a Spaced Repetition tool. With it you can review words at increasing intervals, ensuring long-term retention and mastery. Swipe through word flashcards effortlessly to build a robust vocabulary and make memorizing words a seamless part of your daily routine. Build your English vocabulary.

Many people who are not native English speakers use our app as epub reader to read scientific materials or programming books in English. As long as you have an EPUB file for what you want to read, our app is the best choice.

Our bilingual book reader is designed to enhance your language proficiency one page at a time. Practice and study foreign languages by reading parallel texts where every sentence is translated into your native language.

Reading books with translation is a proven method for language learners to improve their reading comprehension, expand their vocabulary, and gain a deeper understanding of grammar structures.

Read with translation any EPUB ebook from your device, or choose from our library with 3000+ books and short stories.

Reading enhances your creativity, imagination, and empathy. Moreover, reading has been shown to reduce stress, improve mental health, and increase our overall well-being. Dive into a world of dual-language storytelling.

Don't just take our word for it - hear what our users have to say: "This app has revolutionized my language study! I use it with my own EPUB files in a language I am studying. The interface is intuitive. It's also very fast to use and provides a smooth experience during long reading sessions."

Read in English, German, French, Spanish, Italian, or any other language, build your vocabulary, and improve your grammar skills. With our cross-language ebook reader, translate books on the fly and listen to voiceovers of any sentence or word in your book. Best bilingual reading app available.

With duoBooks you will:
- Take control of your language learning journey and achieve your goals faster and easier than ever before.
- Improve speaking by listening to how words and phrases are pronounced correctly.
- Easily incorporate reading into your daily routine and reap the numerous benefits of this powerful skill, all while you learn English (or other languages).
- Read English books with translation (or Spanish, French, etc.) easily even if it's not your native language.
- Study words with scientifically proven technique (Spaced repetition). Swipe word cards and enjoy the process. Smart Interval system is as effective for memorizing words as English lessons.

duoBooks offers short stories specifically created for beginners. They use simple vocabulary, repetitive words, simple dialogues, and uncomplicated sentences.

Alternatively, we have a vast selection of classic literature. From the works of Edgar Allan Poe to the novels of Jane Austen. With over 3000+ classic ebooks available and the ability to import your own files, you'll never run out of options to practice your language skills. Whether you're a beginner or an advanced learner, duoBooks is your app for language learning success. Start your journey today with our free language learning app!

## Key features

- Instant translation of any book
- Personalized vocabulary dictionary
- Spaced repetition for memorization
- Audio voiceovers for pronunciation
- Bilingual parallel text reading
- EPUB reader for custom files

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Full Plan | $2.99 | per month |
| Full Plan | $17.99 | per year |
| Full Plan | $6.99 | per month |
| Full Yearly Plan | $29.99 | per year |
| 6 Month Full Plan | $19.99 | per 6 months |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| War and Peace | $0.99 | one-time |
| Silver Blaze | $0.99 | one-time |
| On The River | $0.99 | one-time |
| Clochette | $0.99 | one-time |
| The Fishing Hole | $0.99 | one-time |
| Alice in Wonderland | $0.99 | one-time |


## Recent user reviews (10 of 34)

All indexed reviews: https://appshunter.io/ios/app/duobooks-language-learning/id1538452253/reviews.md

### 1/5 — С

*2026-08-13*

Я не могу понять почему на планшете он не грузит не показывает книги и вообще ничего нет а в телефоне получается

**Developer response:** Здравствуйте! Просим прощения за неудобства. По описанию трудно определить причину, но попробуйте включить автоматическую установку даты и времени на iPad (Настройки → Основные → Дата и время). Неправильное время может блокировать подключение к серверу.

### 5/5 — супер

*2026-08-08*

очень классное приложение, можно добавлять свои книги и хороший переводчик а так же оно бесплатное

**Developer response:** Thank you for the feedback!

### 5/5 — Thanks letter

*2026-07-29*

Thank you for your app it’s really helpful to me)

**Developer response:** Thank you! Enjoy your reading!

### 1/5 — Очень медленно

*2026-07-12*

Все бы ничего, но почему ж так медленно грузится перевод? Выбираю предложение и жду по 20-30 секунд. В итоге я в Гугле перевод найду быстрее чем тут что-то загрузится

**Developer response:** Здравствуйте! Спасибо за отзыв. Перевод обычно загружается за 1–2 секунды, похоже на проблему в соединении на вашей стороне.

### 5/5 — This app changed my life for real

*2026-06-21*

I don't know who developed this, but I just wanted to say thank you.

**Developer response:** Thank you so much for the feedback, enjoy your learning!

### 3/5 — Translation language

*2026-05-17, version 6.6*

Would be a 5 but it keeps switching to German as the translation language for imported epub books.

### 5/5 — Almost perfection!

*2026-05-13, version 6.6*

I have been waiting for an app like this for a long time. It is so easy to use, but it has such a high level of excellent content when needed.

### 5/5 — Все супер, но

*2026-05-09*

Но хотелось бы чтобы учить слова можно было только из своего словаря, а не предлагаемые.

**Developer response:** Большое спасибо за ваш отзыв! ❤️

Чтобы учить слова только из своего словаря, перейдите на вкладку «Учить слова» → «Настройки» (значок в виде шестерёнки вверху) → «Источники слов» → оставьте активной только опцию «Мой словарь».

### 3/5 — :(

*2026-04-17*

Так, загрузку с конца пофиксили, и это славно. Как копировать слова в свои карточки Quizlet? Опять же, я не знаю, в чем смысл отсутствия этой элементарной вещи, но язык тут не поизучаешь (

**Developer response:** Спасибо за отзыв! Ошибка, из-за которой книга могла открываться с конца, уже исправлена. Пожалуйста, обновите приложение до последней версии.

### 5/5 — Очень классное приложение

*2026-04-16*

Я в восторге, не думал, что будет так хорошо работать. Удобный интерфейс, плюс есть перевод по слову и предложению с его разбором. Так еще и бесплатно…. Странно, почему такой рейтинг и прога не в топе, думал, будет подвох. Разрабам и всем причастным низкий поклон!

**Developer response:** Спасибо!

## Frequently asked questions about duoBooks

### What does duoBooks do?

duoBooks allows you to read any book in any language with instant translation into your native language. It provides detailed explanations for words and sentences, helping you understand grammar and vocabulary. The app also includes tools for vocabulary building and pronunciation practice.

### What are the key features of duoBooks?

Key features include instant translation of any book, a personal dictionary to save new words, spaced repetition for effective memorization, audio voiceovers for accurate pronunciation, and the ability to read bilingual parallel texts. It also functions as an EPUB reader for your own files.

### How much does duoBooks cost?

The app is free to download and use, offering a free experience with in-app purchases. This means you can access many features without paying, but certain premium features or content may require a purchase.

### What languages does duoBooks support?

The app supports reading in a wide range of languages, including English, German, French, Spanish, and Italian, among others. You can translate books on the fly and listen to voiceovers in these supported languages.

### Can I read my own books with duoBooks?

Yes, you can add any EPUB book from your device to the app and read it with translation. This feature is particularly useful for non-native English speakers who want to read scientific materials or programming books in English.

## Version history (last 5 releases)

### 7.0 — 2026-08-25

- Bigger book catalog. Over 17,000 titles now available
- Smarter filters. Browse by language complexity and category
- Redesigned Library interface
- Voice accent settings. Choose how you listen, like switching between British and American English

### 6.9 — 2026-07-24

- Voice settings
- Gesture customisation settings
- Subscription synchronisation across platforms

### 6.8 — 2026-07-16

- Save selected words, phrases, or sentences straight to your dictionary — then filter it to see just your saved quotes or words
- Other minor improvements

### 6.7 — 2026-06-10

We've made improvements to enhance your experience. This update includes bug fixes and performance improvements. Thank you for using DuoBooks!

### 6.6 — 2026-05-12

Improved audio quality
Minor improvements and maintenance

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| --- | --- | --- | --- |
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| [Linga: Read & Learn Languages](https://appshunter.io/ios/app/linga-read-and-learn-languages/id1525101819) | 4.9 (177) | Free | Education |
| [Read English Books & Audio](https://appshunter.io/ios/app/read-english-books-and-audio/id6475873100) | 4.7 (404) | Free | Education |

## More apps by PlainProg LLC

- [AIConnect: World of AI](https://appshunter.io/ios/app/aiconnect-world-of-ai/id1668434394)
- [GrandSlam AI: Generator](https://appshunter.io/ios/app/grandslam-ai-generator/id6754331887)

All apps by PlainProg LLC: https://appshunter.io/developer/1538452255

## Related topics

[2books](https://appshunter.io/ios/topics/2books) · [duobooks](https://appshunter.io/ios/topics/duobooks) · [bilingual books](https://appshunter.io/ios/topics/bilingual-books)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*