FluentU vs DuoCards
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FluentU
Learn languages through interactive videos like movie trailers and music clips. Tap on words for definitions and build vocabulary lists. Offers a 2-week free trial.
- Interactive video lessons
- Real-world content
- Tap-to-translate subtitles
- Vocabulary quizzes
- Bilingual dictionary
- Multiple language options
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Start your 2-week free trial of FluentU now! Cancel anytime. Tired of boring language learning textbooks? FluentU brings languages to life with real-world interactive videos! Learn to read and speak Spanish, French, English, Mandarin Chinese, German, Japanese, Russian, Korean and Italian with FluentU. FluentU turns music videos, movie trailers, news and inspiring talks into an amazing language learning experience. Experience an immersive education that teaches you to speak and comprehend new languages in a natural way. Now you can learn a new language while connecting with the culture. No matter what your skill level or interest, FluentU has you covered. FLUENTU FEATURES: LEARN A NEW LANGUAGE - Immerse yourself in a foreign language to understand how it’s used - Connect with the language through real-world videos - Quiz yourself on the vocabulary - Learn to speak the language instead of scripted phrases - Stay motivated to learn each day WATCH, LISTEN & LEARN - Put the textbooks away and learn from experience - Watch videos with subtitles and translations to learn the language - Tap on any word or phrase to learn its meaning - Add words to your vocabulary list for review - Listen to audio dialogues to gain an understanding of the language BILINGUAL DICTIONARY - Look up any word and see how it’s used in a sentence - Search content by title or grammar and vocabulary points AVAILABLE LANGUAGES: - Chinese (Mandarin) - English - French - German - Italian - Japanese - Korean - Russian - Spanish WHAT PEOPLE ARE SAYING "Great app. To my knowledge the best on the market. You created something unique and new!" - Felix Wedel "It is more helpful than any other tool I've used. I had been using podcasts before and trying to make flashcards, and that worked pretty well. But it ended up that I was spending more time making the flashcards than studying. FluentU really solves this." - David Brown "FluentU has quickly become one of my favorite language-learning tools. Great job on an aesthetically pleasing app and an incredibly functional one." - Justin Price "This concept in FluentU is amazing. It's such a great way to help you understand a spoken language and the way you break it down is amazing." - Demi Pradolin "This app is so fun and useful - the best Chinese language learning app I've ever used." - Richard Jun PLUS SUBSCRIPTION FluentU is available as a monthly ($29.99 for Plus) or yearly subscription ($239.99 for Plus). If you enjoy FluentU, do nothing and your membership will automatically continue for as long as you choose to remain a member. You can easily cancel anytime, online. Just sign up to get started! If you subscribe via iTunes: Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings 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: http://www.fluentu.com/privacy/ Terms of Use: http://www.fluentu.com/terms/
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
Screenshots
Verdict
The clearest difference is ads: FluentU at none against DuoCards's shown. FluentU also leads on update cadence (every 10 days vs monthly). DuoCards's advantage is rating (4.7 vs 4.3) and iOS requirement (13.0 vs 16.4). On price, review sentiment, ratings volume 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
Both are free to download. FluentU sells 8 in-app purchases, starting at $17.99 per month and DuoCards sells 9 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.
DuoCards holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 2.8K and 1.5K respectively. Written reviews point the same way: 56% of FluentU's written reviews are positive against 63% of DuoCards's.
FluentU ships an update every 10 days, DuoCards monthly. Both last shipped on November 7, 2026.
| Parameter | FluentU | DuoCards |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (2.8K ratings) | 4.7 (1.5K ratings) — better |
| Positive reviews | 56.3% of reviews | 63.1% of reviews — better |
| Number of ratings | 2.8K — better | 1.5K |
| Update frequency | Every 10 days — better | Monthly |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 13.0 — better |
| Further details — not scored | ||
| Size | 545 MB | 19 MB |
| Age rating | 12+ | 4+ |
| Developer | Enux Education Limited | DuoCards s.r.o |
Customer experience
FluentU
DuoCards
User reviews
FluentU
From 2.8K App Store ratingsWhat we love
- 🚀 Engaging learning experience
- 🎓 Effective for language learning
- 👍 Variety of content and features
- 💡 Innovative learning approach
Room to improve
- 💰 Expensive subscription
- 🐛 Buggy and unreliable app
- 🔍 Lack of transparency around pricing and cancellation
- 📱 Compatibility issues on mobile devices
DuoCards
From 1.5K App Store ratingsWhat we love
- 👍 Easy to use
- 💡 Customizable flashcards
- 🚀 Efficient learning algorithm
- 🐘 Cute mascot (Memo the mammoth)
Room to improve
- 🐛 Bugs and crashes
- ⚠️ Unreliable server connection
- 💰 Expensive subscription
- 🤔 Confusing interface
Bugs and requests
FluentU
Reported bugs
4 issues- App crashes frequently
- Subscription issues and unexpected charges
- Syncing and login problems
- Inconsistent performance across devices
Requested features
4 requests- Add more language options
- Improve user interface and navigation
- Provide better guidance and progression for learners
- Enhance audio and speech recognition capabilities
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
In-app purchases
FluentU
- FluentU Plus14 Days trial$17.991 Month
- FluentU Plus14 Days trial2 variants$29.991 Month
- FluentU Super Monthly14 Days trial$39.991 Month
Show 5 moreShow fewer
- FluentU Plus14 Days trial$95.991 Year
- FluentU Plus14 Days trial$119.991 Year
- FluentU Plus14 Days trial$139.991 Year
- FluentU Super Annual14 Days trial$199.991 Year
- FluentU Plus14 Days trial2 variants$239.991 Year
DuoCards
- DuoCards Premium2 variants$19.991 Month
- DuoCards Plus$33.003 Months
- DuoCards Premium$34.993 Months
Show 6 moreShow fewer
- 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
Questions
Is FluentU free?
Is DuoCards free?
Which has better reviews, FluentU or DuoCards?
Do FluentU or DuoCards have ads?
Which is updated more often, FluentU or DuoCards?
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