# FluentU vs DuoCards

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.

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.

## The numbers

| Metric | FluentU | DuoCards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (2.8K ratings)](https://appshunter.io/ios/app/fluentu-learn-language-videos/id917892175/reviews) | **[4.7 (1.5K ratings)](https://appshunter.io/ios/app/duocards-vocabulary-builder/id1508159917/reviews)** |
| Number of ratings | **2.8K** | 1.5K |
| Positive reviews | 56.3% of reviews | **63.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 545 MB | 19 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Enux Education Limited](https://appshunter.io/developer/917892174) | [DuoCards s.r.o](https://appshunter.io/developer/1508159916) |

## What reviewers say

### FluentU

[App page](https://appshunter.io/ios/app/fluentu-learn-language-videos/id917892175)

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.

**Highlights:** Interactive video lessons, Real-world content, Tap-to-translate subtitles, Vocabulary quizzes, Bilingual dictionary, Multiple language options

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FluentU Plus | $17.99 | per month |
| FluentU Plus | $29.99 | per month |
| FluentU Super Monthly | $39.99 | per month |
| FluentU Plus | $95.99 | per year |
| FluentU Plus | $119.99 | per year |
| FluentU Plus | $139.99 | per year |
| FluentU Super Annual | $199.99 | per year |
| FluentU Plus | $239.99 | per year |

**What reviewers like**

- 🚀 Engaging learning experience
- 🎓 Effective for language learning
- 👍 Variety of content and features
- 💡 Innovative learning approach

**What reviewers complain about**

- 💰 Expensive subscription
- 🐛 Buggy and unreliable app
- 🔍 Lack of transparency around pricing and cancellation
- 📱 Compatibility issues on mobile devices

**Reported bugs**

- App crashes frequently
- Subscription issues and unexpected charges
- Syncing and login problems
- Inconsistent performance across devices

**Requested features**

- Add more language options
- Improve user interface and navigation
- Provide better guidance and progression for learners
- Enhance audio and speech recognition capabilities


### DuoCards

[App page](https://appshunter.io/ios/app/duocards-vocabulary-builder/id1508159917)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DuoCards Premium | $19.99 | per month |
| DuoCards Plus | $33.00 | per 3 months |
| DuoCards Premium | $34.99 | per 3 months |
| DuoCards Premium | $64.90 | per year |
| DuoCards Premium | $67.99 | per year |
| DuoCards Premium | $107.99 | per year |
| DuoCards Premium | $109.00 | per year |
| DuoCards Premium | $113.99 | per year |
| DuoCards Premium | $162.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 💡 Customizable flashcards
- 🚀 Efficient learning algorithm
- 🐘 Cute mascot (Memo the mammoth)

**What reviewers complain about**

- 🐛 Bugs and crashes
- ⚠️ Unreliable server connection
- 💰 Expensive subscription
- 🤔 Confusing interface

**Reported bugs**

- 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**

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


## Frequently asked questions

### Is FluentU free?

FluentU is free to download, with in-app purchases available.

### Is DuoCards free?

DuoCards is free to download, with in-app purchases available.

### Which has better reviews, FluentU or DuoCards?

DuoCards is rated higher. FluentU averages 4.3 out of 5 from 2.8K ratings, while DuoCards averages 4.7 from 1.5K ratings.

### Do FluentU or DuoCards have ads?

DuoCards shows ads; FluentU does not.

### Which is updated more often, FluentU or DuoCards?

FluentU ships an update every 10 days, and DuoCards monthly. Most recently, FluentU was updated on November 7, 2026 and DuoCards on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*