Comparison

DuoCards vs ReabDook

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

Head to head
About

DuoCards

Master a new language with interactive flashcards and video courses. This app helps you build vocabulary, guess words, and track your progress across over 50 languages. Learn effectively through spaced repetition and integrated translation tools.

Highlights
  • Flashcard learning with spaced repetition
  • Video language courses with interactive subtitles
  • Integrated translator for over 50 languages
  • Vocabulary builder and progress tracker
  • Guess words and phrases to sharpen skills
  • Read foreign language articles
Features
Read full description

Build vocabulary from the real content you already enjoy. DuoCards helps you save new words from videos, articles, shared decks, and your own notes, then remember them with smart flashcards and spaced repetition. Why learners choose DuoCards: - Save words and phrases from videos, subtitles, and articles - Practice with an AI tutor for real-life conversations - Improve pronunciation with instant feedback - Review vocabulary with flashcards that adapt to your progress - Learn English, Spanish, French, German, Japanese, Korean, and 50+ languages - Use ready-made courses, public decks, or your own personal word lists Learn in a simple loop: 1. Discover useful words in context 2. Save them to your personal deck 3. Review, speak, listen, and remember Whether you are learning for travel, school, work, or everyday conversations, DuoCards gives you a flexible way to build vocabulary and keep it in memory. Download DuoCards and start building your language habit today. Terms of use: https://www.duocards.com/termsofuse.html Privacy policy: https://www.duocards.com/privacypolicy.html

About

ReabDook

Learn languages by reading classic books. Tap any word for instant translation, get AI-powered grammar explanations, and build vocabulary with smart flashcards and quizzes. Supports 31 languages and offers text-to-speech for pronunciation.

Highlights
  • Tap-to-Translate
  • AI Grammar Coach
  • 900+ Classic Books
  • Smart Quizzes
  • Text-to-Speech
  • Progress Tracking
Features
Read full description

ReabDook is the language learning app that teaches you through reading. Choose from 900+ classic books in 31 languages, tap any word for an instant translation, and build real fluency — naturally. HOW IT WORKS • Pick a book in your target language — from beginner stories to advanced literature • Read naturally. Tap any unknown word to see its translation instantly • Ask the AI Grammar Coach to explain sentence structure, tenses, and idioms • Save words to your personal vocabulary and review them with smart flashcards • Take personalized quizzes that adapt to what you've learned KEY FEATURES — Tap-to-Translate: Instant translations while you read, no switching apps — AI Grammar Coach: Detailed grammar explanations powered by AI, in context — 900+ Classic Books: Alice in Wonderland, Sherlock Holmes, Pride & Prejudice, and more — Smart Quizzes: Spaced repetition quizzes generated from your personal word list — Text-to-Speech: Hear proper pronunciation for any word or sentence — Progress Tracking: Monitor your streak, words learned, and quiz scores — 31 Languages supported SUBSCRIPTION OPTIONS • Weekly — $6.99/week • Monthly — $17.99/month (most popular) • Quarterly — $34.99/3 months (best value) All plans include unlimited translations, AI grammar explanations, quizzes, vocabulary tools, and text-to-speech. Cancel anytime. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews for the same price and duration unless auto-renew is turned off 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 App Store account settings after purchase. Privacy Policy: https://reabdook.com/privacy Terms of Use (EULA): https://reabdook.com/terms

Screenshots

DuoCards4 screens
ReabDook4 screens

Verdict

The call

The clearest difference is review sentiment: DuoCards at 63% against ReabDook's 0%. DuoCards also leads on rating (4.7 vs 3.0) and ratings volume (1.4K vs 1). ReabDook's advantage is update cadence (every 6 days vs monthly). 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. DuoCards sells 10 in-app purchases, starting at $19.99 per month and ReabDook sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DuoCards holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: DuoCards has 1.4K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 63% of DuoCards's written reviews are positive against 0% of ReabDook's.

UpkeepUpdate frequency

DuoCards ships an update monthly, ReabDook every 6 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
DuoCards versus ReabDook: the parameters behind the verdict, then further details
ParameterDuoCardsReabDook
PriceFreeFree
Rating4.7 (1.4K ratings) — better3.0 (1 ratings)
Positive reviews63.1% of reviews — better0.0% of reviews
Number of ratings1.4K — better1
Update frequencyMonthlyEvery 6 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size19 MB47 MB
Age rating4+4+
DeveloperDuoCards s.r.oGrappes LLC

Customer experience

DuoCards

All ratings1,340 ratings
Positive93.4%
Neutral2.5%
Negative4.2%
Written reviews594 reviews
Positive63.1%
Neutral10.4%
Negative26.4%

ReabDook

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Bugs and requests

DuoCards

Reported bugs

4 issues
  • App freezes and crashes
  • Issues with logging in and accessing content
  • Inconsistent behavior when adding new words
  • Problems with video playback and subtitles

Requested features

4 requests
  • Offline mode
  • More customization options
  • Improved spaced repetition system
  • Better integration with other language learning tools

ReabDook

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

DuoCards

Subscriptions10
  • DuoCards Premium2 variants$19.991 Month
  • DuoCards Plus$33.003 Months
  • DuoCards Premium$34.993 Months
Show 7 more
  • DuoCards Premium$49.991 Year
  • DuoCards Premium7 Days trial$64.901 Year
  • DuoCards Premium7 Days trial$67.991 Year
  • DuoCards Premium1 Year trial$107.991 Year
  • DuoCards Premium7 Days trial$109.001 Year
  • DuoCards Premium7 Days trial$113.991 Year
  • DuoCards Premium1 Year trial$162.991 Year
3 purchases

ReabDook

Subscriptions3
  • Weekly Premium$6.997 Days
  • Monthly Premium$17.991 Month
  • Quarterly Premium$34.993 Months

Questions

Is DuoCards free?
DuoCards is free to download, with in-app purchases available.
Is ReabDook free?
ReabDook is free to download, with in-app purchases available.
Which has better reviews, DuoCards or ReabDook?
DuoCards is rated higher. DuoCards averages 4.7 out of 5 from 1.4K ratings, while ReabDook averages 3.0 from 1 ratings.
Do DuoCards or ReabDook have ads?
Both DuoCards and ReabDook show ads.
Which is updated more often, DuoCards or ReabDook?
DuoCards ships an update monthly, and ReabDook every 6 days. Most recently, DuoCards was updated on October 27, 2026 and ReabDook on October 25, 2026.

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