Comparison

MosaLingua vs FluentU

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

Head to head
About

MosaLingua

This app acts as a personal language coach, offering a method designed by polyglots to help you learn vocabulary and expressions quickly. It supports numerous languages and offers specialized test preparation, adapting to your learning pace and needs.

Highlights
  • 3500+ vocabulary flashcards
  • Native speaker audio recordings
  • Spaced Repetition System (SRS)
  • Offline capabilities
  • Hands-free learning mode
  • Customizable flashcards
  • TOEIC/TOEFL test prep
Features
Read full description

*Join over 13 million other MosaLingua users and finally learn the language you’ve always wanted to be able to speak* Learning a foreign language really isn’t that hard… as long as you have the right tools and techniques! MosaLingua is more than just a language class or app. It’s more like a personal language coach that’s always in your pocket. It’s a language learning method designed by a team of polyglots and teachers to help you learn vocabulary words and expressions, anytime, anywhere. With MosaLingua, learning any (or all) of these languages is quick and painless: - English - Spanish - French - Italian - German - Brazilian Portuguese - Russian - Mandarin Chinese - Japanese - Korean - Arabic You can also work on specific language skills: - TOEIC Test Prep - TOEFL Test Prep - Business English or Business Spanish - Medical English Just 10 minutes of practice per day for 2 months is enough to learn the 600 most important words and phrases for expressing yourself in the language of your choice! WITH MOSALINGUA, YOU GET ◉ 3500+ vocabulary flashcards for the most useful words, expressions, and sentences in Spanish, French, Italian, German, Portuguese, English, and/or Russian ◉ Audio recordings by native speakers so that you learn how to correctly pronounce each and every word, right from the start ◉ Lessons, videos, and tips at every step along your language learning journey ◉ A built-in online dictionary ◉ The option to add custom flashcards ◉ Hands-free mode (practice language while you work out, shop for groceries, or clean the house) ◉ Offline capabilities FUN AND ADDICTIVE Whether you’re a complete beginner or already know your way around the language, whether you want to pass your high school Spanish class or an English proficiency test like the TOEFL or TOEIC, whether you’re learning a language for work, travel, or just for fun… MosaLingua adapts to your needs. ◉ Vocabulary is organized by category and subcategory (like eating out, making a phone call, writing a professional email, or asking for directions) as well as skill level (from the basics, all the way up to advanced technical terms) ◉ BONUS content incentivizes your progress! The more vocabulary you learn, the more new dialogues, jokes, and proverbs you unlock. EFFECTIVE METHODS = LONG-LASTING RESULTS The MosaLearning method relies on Spaced Repetition System (SRS) technology. With our app, ◉ you don’t waste any time: your app calculates the optimal time for reviewing so that you practice new words right before you’re about to forget them! ◉ you learn the 20% of the language that will serve you in 80% of situations you encounter – that’s called the Pareto principle ◉ your study sessions are adapted to your particular struggles, your rhythm, and your schedule ◉ you have the opportunity to work on comprehension and expression at the same time (reading, listening, speaking and writing) ◉ both your visual and auditory memories are stimulated, resulting in more sustainable learning IMPORTANT NOTE You’ll need to become a subscriber if you want all of these features and benefits. We offer 2 different subscription plans: Monthly Premium: €9.49/month, cancel at any time Yearly Premium: €71.90/year (which comes out to €5.99 per month), cancel at any time - Once you’ve confirmed your purchase, it will be charged to your iTunes account - Subscriptions are renewed automatically unless you cancel at least 24 hours before the subscription is scheduled to be renewed - You will be charged for the automatic renewal up to 24 hours before the end of the current subscription period - You can manage your subscription or cancel automatic renewal at any time in your iTunes App Store account settings Email us: support_en@mosalingua.com Privacy policy: https://www.mosalingua.com/app-privacy-en/ Terms of service: https://academy.mosalingua.com/legal/tos/?lang=en

About

FluentU

Learn languages through engaging, real-world videos like movie trailers and music clips. Interactive subtitles and vocabulary tools make comprehension and speaking natural. Connect with culture while mastering a new language.

Highlights
  • Interactive video lessons
  • Real-world content
  • Tap-to-translate subtitles
  • Vocabulary review tools
  • Bilingual dictionary
  • Cultural immersion
Features
Read full description

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/

Screenshots

MosaLingua4 screens
FluentU4 screens

Verdict

The call

The clearest difference is monetization model: MosaLingua at free with in-app purchases against FluentU's subscription. MosaLingua also leads on review sentiment (82% vs 56%) and rating (4.6 vs 4.3). FluentU's advantage is update cadence (fortnightly vs every 2 months). On price, ratings volume, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MosaLingua sells 11 in-app purchases, starting at $7.49 per month and FluentU sells 12 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

MosaLingua holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 1.8K and 2.8K respectively. Written reviews point the same way: 82% of MosaLingua's written reviews are positive against 56% of FluentU's.

UpkeepUpdate frequency

MosaLingua ships an update every 2 months, FluentU fortnightly. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

Scorecard5 real differences · 5 level
MosaLingua versus FluentU: the parameters behind the verdict, then further details
ParameterMosaLinguaFluentU
PriceFreeFree
Rating4.6 (1.8K ratings) — better4.3 (2.8K ratings)
Positive reviews81.7% of reviews — better56.3% of reviews
Number of ratings1.8K2.8K — better
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.4
Further details — not scored
Size205 MB549 MB
Age rating12+12+
DeveloperdigiSchoolEnux Education Limited

Customer experience

MosaLingua

All ratings1,837 ratings
Positive91.2%
Neutral4.1%
Negative4.6%
Written reviews301 reviews
Positive81.7%
Neutral6.6%
Negative11.6%

FluentU

All ratings2,783 ratings
Positive83.7%
Neutral4.1%
Negative12.2%
Written reviews1,067 reviews
Positive56.3%
Neutral9.0%
Negative34.7%

User reviews

MosaLingua

From 1.8K App Store ratings

What we love

  • 🚀 Efficient learning method
  • 👍 Customizable learning experience
  • 🎓 Effective for vocabulary and phrase building
  • 🔊 Good audio quality and pronunciation
  • 💪 Helps with rapid language progress

Room to improve

  • 🐛 Occasional bugs and crashes
  • 🕰️ Slow loading times and syncing issues
  • 🤔 Confusing navigation and interface
  • 🔒 Difficulty accessing premium content
  • 🔇 Issues with audio playback and voice recordings

FluentU

From 2.8K App Store ratings

What 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

Bugs and requests

MosaLingua

Reported bugs

3 issues
  • App resets progress and language settings
  • Inability to access previously purchased content
  • Inconsistent performance across devices and OS versions

Requested features

5 requests
  • More language options and dialects
  • Improved user interface and customization
  • Better integration with other language learning resources
  • Expanded audio and visual learning content
  • Enhanced spaced repetition and review features

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

In-app purchases

11 purchases

MosaLingua

Subscriptions5
  • MosaLingua Premium - PM7 Days trial$7.491 Month
  • MosaLingua Premium - 1 Month7 Days trial$9.491 Month
  • MosaLingua Premium - P6M$24.996 Months
Show 2 more
  • MosaLingua Premium - PY7 Days trial$49.991 Year
  • MosaLingua Premium - 12 Months7 Days trial$71.901 Year
One-time6
  • Mosalingua Spanish$4.99
  • Purchase EN Premium App$4.99
  • Purchase IT Premium App$4.99
Show 3 more
  • Purchase DE Premium App$4.99
  • Purchase FR Premium App$4.99
  • Promo pack$10.99
12 purchases

FluentU

Subscriptions12
  • FluentU Plus14 Days trial$14.991 Month
  • FluentU Plus14 Days trial$17.991 Month
  • FluentU Plus14 Days trial$20.991 Month
Show 9 more
  • FluentU Plus14 Days trial$23.991 Month
  • FluentU Plus14 Days trial2 variants$29.991 Month
  • FluentU Super Monthly14 Days trial$39.991 Month
  • FluentU Plus14 Days trial$71.991 Year
  • 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

Questions

Is MosaLingua free?
MosaLingua is free to download, with in-app purchases available.
Is FluentU free?
FluentU is free to download, with in-app purchases available.
Which has better reviews, MosaLingua or FluentU?
MosaLingua is rated higher. MosaLingua averages 4.6 out of 5 from 1.8K ratings, while FluentU averages 4.3 from 2.8K ratings.
Do MosaLingua or FluentU have ads?
Neither MosaLingua nor FluentU shows ads.
Which is updated more often, MosaLingua or FluentU?
MosaLingua ships an update every 2 months, and FluentU fortnightly. Most recently, MosaLingua was updated on September 23, 2026 and FluentU on September 22, 2026.

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