Comparison

duoBooks vs Lella

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

Lella

Learn languages through engaging stories, news, and classic texts. Features audio reading, progress tracking, and a flashcard system to build vocabulary. Supports Turkish, English, German, Spanish, and French.

Highlights
  • Diverse reading materials
  • Five supported languages
  • Audio reading and pronunciation practice
  • Customizable learning pace
  • Quizzes and progress tracking
  • Interactive flashcard vocabulary builder
Read full description

Lella: Learning Language and Exploring Culture - A New Experience Lella is an application that makes language learning more fun and engaging. It offers a wide range of content, from interesting character stories like Batman to classics and current news. Moreover, it provides texts in five different languages: Turkish, English, German, Spanish, and French. Why Lella? Learning a language can sometimes be boring, but with Lella, you can make this process enjoyable. Here's why you should choose Lella: - Diverse Texts: Within the app, you can find various types of texts, from intriguing character stories like Batman to classic novels and current news articles. By selecting texts that match your interests, you can make learning more enjoyable. - Five Different Languages: Lella includes five main languages: Turkish, English, German, Spanish, and French. You can improve your language skills by reading or listening to texts in these languages. - Audio Reading: Lella allows you to learn a language by both reading texts and listening to stories side by side in two languages. Additionally, you can enhance your pronunciation skills by listening to the language you want to learn. - Set Your Learning Pace: With Lella, you have the opportunity to learn at your own pace. Whether you're a beginner, intermediate, or advanced learner, you can choose texts that suit your interests and skill level. - Tests and Progress Tracking: You can test your knowledge with quizzes at the end of texts. Improve your listening and reading comprehension, pronunciation, and vocabulary. - Flashcard Feature: With the new flashcard feature, you can enhance your vocabulary learning experience. Each flashcard presents the word you want to learn on one side, allowing you to listen to its pronunciation and guess its meaning. Flip the card to see the translation in your native language. You can also organize your flashcards into folders and customize them according to your preferences, making your learning journey even more interactive and personalized. The Lella app offers a unique experience that brings language and culture together. Whether you're a beginner or an experienced language learner, learning a language with Lella is now more enjoyable. Download it now and start your language learning journey! Last but not least, we extend our heartfelt gratitude to Freepik, Vecteezy, Lottie, and Storyset platforms for their provision of free vectors and abundant content. Thanks to these valuable resources, we are able to offer you a richer and more immersive experience with the visual and design elements of our Lella app. Your contributions have greatly empowered us to enhance your language learning journey. Thank you, Freepik, Vecteezy, Lottie, and Storyset! Payment will be charged to your Apple ID account at the confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: https://sites.google.com/view/lellapp-privacy-policy/ana-sayfa Terms of Use: https://sites.google.com/view/lella-terms-conditions/ana-sayfa

Screenshots

duoBooks4 screens
Lella4 screens

Verdict

The call

The clearest difference is update cadence: duoBooks at every 2 weeks against Lella's every 2 months. duoBooks also leads on ratings volume (55 vs 1) and iOS requirement (15.0 vs 18.0). Lella's advantage is rating (5.0 vs 4.7). On price, ads, in-app purchases and monetization model 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 11 in-app purchases, starting at $2.99 per month and Lella sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Lella holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: duoBooks has 55 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

duoBooks ships an update every 2 weeks, Lella every 2 months. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
duoBooks versus Lella: the parameters behind the verdict, then further details
ParameterduoBooksLella
PriceFreeFree
Rating4.7 (55 ratings)5.0 (1 ratings) — better
Positive reviews68.4% of reviews—
Number of ratings55 — better1
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size53 MB73 MB
Age rating12+4+
DeveloperPlainProg LLCIbrahim Aktas

Customer experience

duoBooks

All ratings55 ratings
Positive94.5%
Neutral0.0%
Negative5.5%
Written reviews38 reviews
Positive68.4%
Neutral13.2%
Negative18.4%

Lella

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

11 purchases

duoBooks

Subscriptions5
  • Full Plan7 Days trial$2.991 Month
  • Full Plan3 Days trial$6.991 Month
  • Full Plan7 Days trial$17.991 Year
Show 2 more
  • 6 Month Full Plan3 Days trial$19.996 Months
  • Full Yearly Plan3 Days trial$29.991 Year
One-time6
  • War and Peace$0.99
  • Silver Blaze$0.99
  • On The River$0.99
Show 3 more
  • Clochette$0.99
  • The Fishing Hole$0.99
  • Alice in Wonderland$0.99
3 purchases

Lella

Subscriptions3
  • 1 month$2.991 Month
  • 6 month$12.996 Months
  • 12 month$12.991 Year

Questions

Is duoBooks free?
duoBooks is free to download, with in-app purchases available.
Is Lella free?
Lella is free to download, with in-app purchases available.
Which has better reviews, duoBooks or Lella?
Lella is rated higher. duoBooks averages 4.7 out of 5 from 55 ratings, while Lella averages 5.0 from 1 ratings.
Do duoBooks or Lella have ads?
Neither duoBooks nor Lella shows ads.
Which is updated more often, duoBooks or Lella?
duoBooks ships an update every 2 weeks, and Lella every 2 months. Most recently, duoBooks was updated on October 13, 2026 and Lella on October 3, 2026.

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