Comparison

Graspp Translate vs duoBooks

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

Head to head
About

Graspp Translate

Instantly translate words from printed text using your finger, a pointer, or a single tap. Save words to learn later, view transcriptions, and listen to pronunciation. Offers keyboard input for quick translations.

Highlights
  • Translate with finger pointing
  • Translate with pointer control
  • Translate with single tap
  • Keyboard input for translation
  • Save words for later learning
  • View detailed translations and transcriptions
  • Listen to pronunciation
Read full description

Searching for a translation by typing unknown words is so boring! We've fixed it. Check out these three super convenient ways to translate words in printed text. TRANSLATE WITH YOUR FINGER Just point at the word with your finger right in a book, textbook or magazine. Graspp will identify the word you're pointing your finger at and show the translation. Magic! TRANSLATE WITH A POINTER If you only have one hand free, you can use a pointer. Touch and hold the button and point at the target word, as if you were playing a video game! Except that here you're shooting words instead of zombies. TRANSLATE WITH A SINGLE TAP You can also simply tap the word right on the screen. Think of every word as a button. Click on words, and Graspp will show the translation. Graspp also enables you to enter words using the keyboard — this is our main innovation :) You can also view detailed translations and transcriptions, listen to pronunciation, and save words to learn them later.

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!

Screenshots

Graspp Translate4 screens
duoBooks4 screens

Verdict

The call

The clearest difference is review sentiment: Graspp Translate at 100% against duoBooks's 69%. Graspp Translate also leads on iOS requirement (13.0 vs 15.0). duoBooks's advantage is rating (4.7 vs 4.5) and ratings volume (48 vs 15). On price, update cadence, ads and in-app purchases 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. Graspp Translate sells 2 in-app purchases, starting at $5.49 per month and duoBooks sells 11 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

duoBooks holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 15 and 48 respectively. Written reviews complicate that: 100% of Graspp Translate's written reviews are positive against 69% of duoBooks's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on August 25, 2026 and September 26, 2026 respectively.

Scorecard4 real differences · 6 level
Graspp Translate versus duoBooks: the parameters behind the verdict, then further details
ParameterGraspp TranslateduoBooks
PriceFreeFree
Rating4.5 (15 ratings)4.7 (48 ratings) — better
Positive reviews100.0% of reviews — better68.6% of reviews
Number of ratings1548 — better
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.0
Further details — not scored
Size103 MB54 MB
Age rating4+12+
DeveloperLAKI IINBORPlainProg LLC

Customer experience

Graspp Translate

All ratings15 ratings
Positive86.7%
Neutral0.0%
Negative13.3%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

duoBooks

All ratings48 ratings
Positive93.8%
Neutral0.0%
Negative6.3%
Written reviews35 reviews
Positive68.6%
Neutral11.4%
Negative20.0%

In-app purchases

2 purchases

Graspp Translate

Subscriptions2
  • Monthly Pro subscription$5.491 Month
  • Yearly Pro subscription$39.991 Year
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

Questions

Is Graspp Translate free?
Graspp Translate is free to download, with in-app purchases available.
Is duoBooks free?
duoBooks is free to download, with in-app purchases available.
Which has better reviews, Graspp Translate or duoBooks?
duoBooks is rated higher. Graspp Translate averages 4.5 out of 5 from 15 ratings, while duoBooks averages 4.7 from 48 ratings.
Do Graspp Translate or duoBooks have ads?
Neither Graspp Translate nor duoBooks shows ads.
Which is updated more often, Graspp Translate or duoBooks?
Graspp Translate ships an update every 2 weeks, and duoBooks every 2 weeks. Most recently, Graspp Translate was updated on August 25, 2026 and duoBooks on September 26, 2026.

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