DuoCards vs eLang
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
eLang
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Learn a language in a real way, step by step Learning a new language is neither fast nor easy: it requires consistency, practice, and an effective methodology. eLang doesn’t promise magic formulas, but it does offer a comprehensive approach backed by research in language acquisition, based on Spaced Repetition. With a database of over 3,000 words and expressions, eLang helps you build a solid foundation. You’ll study and take exams at carefully scheduled intervals, ensuring long-term retention and measurable progress. How does it work? Each study session includes 10 lessons, which you can complete whenever you want. Each lesson contains: • The expression to study • A contextual example of usage • Relevant notes to better understand its meaning You can also listen to the pronunciation of each expression and example. If you’re subscribed, you’ll enjoy a clear, natural voice. If not, voice quality depends on your device. But don’t worry: you can earn “Gems” to unlock the natural voice, either by purchasing them or watching ads. Your choice! After studying… comes the challenge Once the session is over, you’ll take an exam on what you’ve learned. You can choose from three assessment modes: • Writing the expression • Reconstruction (assemble the expression from fragments) • Pronunciation Based on your performance and the type of exam, eLang assigns a score to each expression and calculates when you should be tested again, following the logic of Spaced Repetition. An expression is considered “Learned” when it reaches 20 points, and you won’t be tested on it again. But it’s not that easy: points are calculated based on your accuracy, exam mode, and mistakes (like incorrect characters in writing). Real learning, with real memory Suppose today you study a word and answer it correctly in the exam: you earn 5 points. Since it’s fresh, it’s normal to remember it. The next exam will be in two days. At that time, there’s no lesson—only a mandatory exam. If you get it right again, you earn 10 more points and the next exam is in one week. If you fail, you’ll study the expression again and retake the exam immediately—but with a penalty, for example, -3 points. So you’ll move forward and backward with each word until you truly learn it. This system reinforces long-term memory and prevents you from forgetting what you’ve learned. With eLang, every step matters. No rush, no shortcuts. Just real results.
Screenshots
Verdict
The clearest difference is ads: eLang at none against DuoCards's shown. eLang also leads on update cadence (every 6 days vs monthly). DuoCards's advantage is iOS requirement (13.0 vs 15.1). On price, 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
Both are free to download. DuoCards sells 9 in-app purchases, starting at $19.99 per month and eLang sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
DuoCards ships an update monthly, eLang every 6 days. The most recent releases landed on November 11, 2026 and October 27, 2026 respectively.
| Parameter | DuoCards | eLang |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.5K ratings) — better | — |
| Positive reviews | 63.1% of reviews | — |
| Number of ratings | 1.5K — better | — |
| Update frequency | Monthly | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 19 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | DuoCards s.r.o | Yodeski Rodriguez Alvarez |
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
eLang
Not enough reviews yet to summarise bugs or requests.
In-app purchases
DuoCards
- DuoCards Premium2 variants$19.991 Month
- DuoCards Plus$33.003 Months
- DuoCards Premium$34.993 Months
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- 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
eLang
- Monthly$2.991 Month
- Annual$29.991 Year
- 1000 Gems$0.99
- 5000 Gems$2.99
- 10000 Gems$5.99









