DuoCards vs ESLFLIX
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
ESLFLIX
Enhance English fluency with daily reading and vocabulary building. Access articles tailored to all CEFR levels, from beginner to advanced, with new content added daily. Save and master new words to improve long-term retention and track your progress.
- Articles for all CEFR levels (A1-C2)
- Daily content updates
- Instant vocabulary saving
- Personalized vocabulary review
- Progress tracking
- Short articles for busy schedules
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Master English Through Reading: From Beginner to Advanced Transform your English fluency with ESLFLIX, the ultimate daily reading companion and vocabulary builder. Whether you are just starting at level A1 or perfecting your skills at C2, our app provides the structure and content you need to reach the next level. Why Choose ESLFLIX? Learning a language is most effective when you engage with interesting content. ESLFLIX replaces boring textbooks with a library of engaging articles designed to challenge and inspire you. Key Features: Articles for Every Level (A1–C2): We believe that everyone should have access to high-quality reading material. Our library is carefully categorised into CEFR levels, ensuring the text is never too easy or too frustrating. Daily Content Updates: Keep your learning habit alive with new articles added every day. From science and technology to culture and history, there is always something new to discover. Instant Vocabulary Saving: Never lose a new word again. While reading, simply tap on any word you don't know to save it instantly to your personal Vocabulary Vault. Personalised Vocab Builder: It isn’t enough to just save a word; you have to master it. Our built-in vocabulary tool helps you review and memorise your saved words, ensuring they move from your short-term memory to your long-term fluency. Designed for Progress: Track your reading consistency and watch your vocabulary grow. ESLFLIX is designed to turn small daily actions into massive language improvements. Who is ESLFLIX for? Self-Learners: Use the app as your primary source of daily input. Students: A perfect companion to your existing English classes or tutoring with an ESLFLIX teacher. Busy Professionals: Articles are designed to be read in 5-10 minutes—perfect for your commute or coffee break. Start your journey today. Download ESLFLIX and experience the most effective way to build your English vocabulary through the power of reading. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://english-grammar-homework.com/privacy-policy-2/
Screenshots
Verdict
The clearest difference is rating: DuoCards at 4.7 against ESLFLIX's 4.0. DuoCards also leads on ratings volume (1.5K vs 1). 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
Both are free to download. DuoCards sells 9 in-app purchases, starting at $19.99 per month and ESLFLIX sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
DuoCards holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: DuoCards has 1.5K ratings behind it against 1, so its average is the more settled of the two.
| Parameter | DuoCards | ESLFLIX |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.5K ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 63.1% of reviews | — |
| Number of ratings | 1.5K — better | 1 |
| Update frequency | Monthly | — |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 19 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | DuoCards s.r.o | Harry Chafer-Cook |
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
ESLFLIX
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
ESLFLIX
- ESLFLIX Premium$2.991 Month









