Comparison

duoBooks vs Language Islands

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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!

About

Language Islands

Features
Read full description

You learn a language in moments, not in grammar tables. Language Islands teaches the Japanese people speak at home and around town: waking up, breakfast, the commute, small talk, the last order at the bar. Each island is one moment of the day, taught as 150 phrases in the podcast. This app puts every one of those phrases on a flashcard. Start with Waking Up, free. That is the full first island: 150 phrases covering alarms, coffee, who is in the bathroom, and getting out the door on time. Tap a card to flip it, then tell the app whether you knew the answer. It keeps score for every island, and when a round ends you can re-deal just the ones you missed. Every card shows the phrase four ways: English, kanji, kana and romaji. Once you can read the kana, switch the romaji off and make yourself work for it. A full hiragana and katakana chart sits one tap away for the moments a character still trips you up. One purchase gets you the complete Japanese set: 13 islands and 1,950 phrases, from Commuting to Work through Work Meetings, Evening Plans, Restaurant and Bar, and Grocery Shopping. When new Japanese islands are released, they are added to the set at no extra cost. More languages are on the way, each as its own complete set. There is an Apple Watch app too. It deals you the phrases you have not learned yet, so five minutes in a queue becomes a review session, phone in your pocket or left at home. A few things the app does not do. It does not need an account. It does not show ads. It does not collect anything: your progress lives on your device and nowhere else. And the podcast is one tap away on every screen, because the cards work best alongside the episodes, where every phrase is spoken aloud, English first, then natural spoken Japanese, then once more slowly. Learn the moment you are in. The rest of the day can wait.

Screenshots

duoBooks4 screens
Language Islands4 screens

Verdict

The call

The clearest difference is iOS requirement: duoBooks at 15.0 against Language Islands's 17.0. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. duoBooks sells 4 in-app purchases, starting at $8.99 per month and Language Islands sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
duoBooks versus Language Islands: the parameters behind the verdict, then further details
ParameterduoBooksLanguage Islands
PriceFreeFree
Rating4.8 (61 ratings) — better—
Positive reviews68.4% of reviews—
Number of ratings61 — better—
Update frequencyEvery 2 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS15.0 — better17.0
Further details — not scored
Size55 MB2 MB
Age rating12+4+
DeveloperPlainProg LLCCHRISTOPHER ROBERT MURRAY

In-app purchases

4 purchases

duoBooks

Subscriptions4
  • Full Plan3 Days trial$8.991 Month
  • Full Yearly Plan7 Days trial$19.991 Year
  • 6 Month Full Plan3 Days trial$24.996 Months
Show 1 more
  • Full Yearly Plan3 Days trial$39.991 Year
1 purchases

Language Islands

One-time1
  • All Japanese islands$2.49

Questions

Is duoBooks free?
duoBooks is free to download, with in-app purchases available.
Is Language Islands free?
Language Islands is free to download, with in-app purchases available.
Do duoBooks or Language Islands have ads?
Neither duoBooks nor Language Islands shows ads.

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