duoBooks vs WordVia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
duoBooks
Read any book in any language with instant translation and detailed word explanations. Build your vocabulary with a personal dictionary and spaced repetition tools. Improve pronunciation with audio voiceovers and master new languages through immersive bilingual reading.
- 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
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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!
WordVia
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WordVia turns reading into language learning. Open any book in a foreign language, tap a word to instantly translate it, and build vocabulary in context - without ever leaving the page. No app-switching. Just real books. HOW IT WORKS - Start with a free book from our library, or upload your own (EPUB and PDF supported) - Tap any word for an instant translation - See translations inline, in context - Listen to the book read aloud while you follow along - Save words to build your personal vocabulary - Practice your saved words in short exercises, with spaced repetition - Review a saved word right on the page when you meet it again - Track your progress: reading time, saved words, words you know FREE BOOKS TO START WITH A hand-picked collection of public domain classics, sorted by language and difficulty, ready to download right inside the app. No empty shelf on day one - pick a book and start reading in seconds. READ AND LISTEN Hear the book in the language you are learning. Choose the voice and the speed, follow the text as it is spoken, and stop on any word to see its translation - playback continues from the same place. Reading and listening together is one of the fastest ways to connect the written word to the spoken one. PRACTICE WHAT YOU READ The words you save come back in the Training tab, in five short exercises: Pairs, Fill the gap, Build the phrase, Say it, and Repeat by ear. Spaced repetition picks the words that are due, so every session stays short. Tap any word in an exercise to see its translation. LEARN A LANGUAGE BY READING WordVia is built around comprehensible input and extensive reading - the methods polyglots and language teachers use to reach real fluency. You don't memorize a language. You experience it, page by page. Read foreign novels, short stories, classics and your own ebooks. Every book becomes a personal language lesson, calibrated to what you already love reading. LANGUAGES Learn Spanish by reading. Learn French by reading. Learn German, Italian, Portuguese, Dutch, Russian, Polish, Turkish, Swedish, Japanese, Korean, Chinese, Arabic, and 20+ more - all through the same tap-to-translate reading experience. WHY WORDVIA - Read books in foreign languages with one-tap translation - Translations that fit the sentence you are reading, not just the dictionary entry - Build vocabulary in context, the way our brains actually learn words - Words you saved are highlighted as you keep reading - Words are saved in their dictionary form, so every form of a word shares one card - Works with your own ebook library - your books, your pace - Built for serious learners, polyglots, and bilingual readers WHO IT'S FOR - Language learners who want real progress, not gamified loops - Readers tired of flashcards and rote memorization - Anyone who wants to read foreign novels and graded readers - Beginners and intermediate learners (CEFR A2 to B2) - Polyglots looking for a serious immersion reader VOCABULARY IN CONTEXT Words learned in context stick. WordVia gives you the meaning of any word in the sentence you actually read, so you remember it next time without effort. This is how comprehensible input works. Whether you want to learn Spanish through novels, learn French through short stories, or learn German with ebooks, WordVia turns every book into a language lesson. WORDVIA PREMIUM Reading, translation, listening, your dictionary and a progress overview are free. Free users get five training sessions a day. Premium makes training unlimited and adds detailed statistics: reading speed, words you still remember after a month, words you keep forgetting. Premium is an auto-renewing subscription, billed yearly or monthly, with a 7-day free trial for new subscribers. Start learning languages by reading. Open WordVia and tap your first word. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://wordvia.arvanix.net/privacy/
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Verdict
The clearest difference is in-app purchases: WordVia at none against duoBooks's 3. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. duoBooks sells 3 in-app purchases, starting at $6.99 per month. WordVia asks for nothing beyond the download.
duoBooks ships an update every 2 weeks, WordVia every 11 days. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.
| Parameter | duoBooks | WordVia |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (59 ratings) — better | — |
| Positive reviews | 68.4% of reviews | — |
| Number of ratings | 59 — better | — |
| Update frequency | Every 2 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 53 MB | 110 MB |
| Age rating | 12+ | 12+ |
| Developer | PlainProg LLC | Soghomon Chilingaryan |
In-app purchases
duoBooks
- Full Plan3 Days trial$6.991 Month
- 6 Month Full Plan3 Days trial$19.996 Months
- Full Yearly Plan3 Days trial$29.991 Year
WordVia
No in-app purchases









