Binge your way to FlixFluent β€” Binge your way to fluency on Netflix and YouTubefluency

Click any word in a Netflix or YouTube subtitle and get the grammar explained in place, in your own language. A browser extension with dual subtitles, word and sentence deconstruction, and a web app that turns every word you click into a flashcard.

View pricingSee how it works
NetflixYouTubeChrome extension for Netflix & YouTube Β· web app at app.flixfluent.com Β· 27 languages, any pair.

Try it right here β€” hover and click the subtitle below.

πŸ‡°πŸ‡·Korean
Streaming scene with FlixFluent dual subtitles and interactive word breakdown

Every word inside an explanation is clickable too β€” keep digging until it clicks.

7-day free trialCancel anytime30-day money-back guaranteePayment handled by Stripe

Recognized by Seoul, covered by the press

FlixFluent is built in Seoul with the support of the city's startup programs and accelerators.

  • Seoul Metropolitan Government
  • Seoul Global Center
  • DOHE
  • Founder Institute
  • The Korea Herald
  • News1
  • The Korea
  • K-withus

In the press

Second place at Jump Up, Start Up 2026

Jump Up, Start Up is the Seoul Metropolitan Government's startup competition for foreign founders. On September 30, 2026, nine finalists from eight countries pitched at Seoul Global Center, and FlixFluent took the Best Excellence Award.

Who it's for

The learners who FlixFluent adapts to every learner level from beginner to advancedstay

We asked our customers why they keep FlixFluent. Three answers came back, in three languages. See if one is yours.

The fan

You were going to watch anyway

The culture pulled you in, and you want the language to come along, even when you're just relaxing. Studying has to cost you nothing, or it won't survive a busy month.

  • β†’Dual subtitles on the shows and creators you already follow
  • β†’Hover any word for its meaning in that scene, without pausing
  • β†’Explanations only when you ask for them
  • β†’No streak, no schedule, no lesson 1
Good for: Learners who want the language while they relax, with a habit that costs nothing to keep and nothing to resume.

The self-directed learner

You set your own table

You know what you want to watch, and you don't want a course deciding for you. What you need is the line in front of you explained, right there, the moment you hear it.

  • β†’Works on Netflix, YouTube and, in beta, any website
  • β†’Word explanations and sentence deconstruction, in place
  • β†’The Digger: every part of an explanation is clickable
  • β†’27 languages, any pair, explained in your own language
Good for: Learners who choose their own content and want it explained the moment they hear it.

The long haul

Your reason outlasts your motivation

A move, a job, a family, a country you live in. Fluency is a five-year project, you already use other tools for it, and you can name exactly what they don't do.

  • β†’Keeps working alongside your tutor, Anki or test-prep app
  • β†’Grammar, endings and register explained for this sentence, not the dictionary's average
  • β†’FSRS flashcards from the words you click, CEFR tests to track your level
  • β†’Your dictionary, searchable and exportable, yours to keep
Good for: Learners with a reason that outlasts motivation, who already use other tools and want the one thing those tools don't do.

Why learners get stuck

Six walls every learner hits. FlixFluent breaks the walls language learners hitOne screen to break them.

Apps set the table for you. FlixFluent works on whatever you were going to watch anyway, and explains it in place.

Grammar

Explained in the scene, not in a textbook.

Grammar tables don't stick because nothing in them is yours. The ending you can't parse is always in a line you actually care about.

Click the word. FlixFluent explains the ending, the stem and the role it plays in this exact sentence, in your language.

Vocabulary

Words in, words out

You study 50 words, pass the quiz, and forget 40 by Thursday. Lists give your memory nothing to hold on to.

Every word you click is saved with its scene. The web app turns them into spaced-repetition flashcards, in context.

Speed

Too fast. Way too fast.

Your textbook speaks at 60% speed. Real people don't. The moment a native speaker opens their mouth you're already three sentences behind.

Real dialogue at real pace, with auto-pause, one-key line replay and 0.5Γ— speed when you need it.

Consistency

Great start. Then life happens.

Study plans die in the quiet months. The streak breaks, the app gets uninstalled, and you start over for the third time.

There is nothing to keep up. You were going to watch tonight anyway; the subtitles just do more. Passive intake, zero extra effort.

Pronunciation

Hear it the way it was said

Dictionary audio reads a word in isolation. In real speech the same word is clipped, stressed or swallowed differently every time.

Play any word's pronunciation as it sounds in that exact sentence, right from the explanation.

Your content

You set the table

Courses pick the video for you, at a level someone else decided, about things you don't care about. That is why they get abandoned.

You choose the show, the creator, the article. FlixFluent runs on Netflix, YouTube and, in beta, any website.

The grammar, explained in place.

Three ways to open a line, each in your own language, plus quizzes that check it stuck, all without leaving the player. The demo below runs in the language you picked.

Hover any word in the subtitle for its meaning in this exact line, not a dictionary's first entry. No pause, no new tab.

Streaming scene with FlixFluent dual subtitles and interactive word breakdown

Why choose FlixFluent?

Subtitles show you the words. FlixFluent is built to teach you the language β€” and the difference shows up by episode three.

Dual subtitles on Netflix & YouTubeTypical subtitle toolsYesFlixFluentYes
What a word meansTypical subtitle toolsDictionary lookupFlixFluentExplained for this scene β€” slang, tone and nuance included
How the sentence worksTypical subtitle toolsLook it up yourselfFlixFluentOne-click word and sentence deconstruction
Going deeperTypical subtitle toolsβ€”FlixFluentThe Digger: click into stems, particles and endings
Remembering itTypical subtitle toolsExport and study elsewhereFlixFluentBuilt-in spaced-repetition trainer from what you click
Checking it stuckTypical subtitle toolsβ€”FlixFluentQuizzes on the lines you just watched, at your level
Finding something to watchTypical subtitle toolsSearch on your ownFlixFluentA growing catalogue rated A1 to C2, filtered by level

Seven days to feel the difference, on a show you were going to watch anyway. Nothing charged until you decide.

The FlixFluent web app Β· app.flixfluent.com

Beyond watching

Every word you click in the extension lands in your account. Review it in any browser, including your phone's. Mobile app coming soon.

Web app

Test

CEFR A1–C2 grammar, vocabulary, and reading tests for English, Korean, German, French, and Spanish β€” check that your level is actually moving and track progress over time.

Web app Β· phone-friendly

Learn

FSRS spaced-repetition flashcards built from the words you clicked, each with its scene. Import your Anki decks, export CSV, manage everything in My Dictionary.

your-favourite-site.example/article

Extension Β· Beta

StudyBeta

The same engine on any website: hover translations, word explanations and sentence deconstruction while you read. Extension only, in beta.

Study time

24m
Today
2h 57m
Total
25m
Daily average
WTFSSMT

Web app

Study time

Your real learning time, day by day. Minutes count when you hover, open explanations, review cards, answer quizzes or take tests, not when you only watch. See today, your total and your daily average over 7 days, 30 days or all time.

Search titles
A2
B1
B2
B1
C1
B1

Web app

A catalogue at your level

Every show and video the community has watched with FlixFluent, each rated A1 to C2 from its subtitles. Filter by level, search by title and find something you can actually follow. It grows with every video.

FlixFluent
FlixFluent

Mobile app Β· iPhone & Android

FlixFluent on your phoneComing soon

YouTube with dual subtitles, word explanations and sentence breakdowns, plus your trainer and tests, on iPhone and Android. In testing now.

πŸ‡°πŸ‡·Korean

Multiplier vs 1.0Γ— benchmark

How long it really takes to reach Korean mastery

Benchmark (1.0Γ—)

2,200h

hours to Korean mastery

Worst: Duolingo

0.61Γ—

~3,600h β€” 64% more time

Best competitor

1.29Γ—

Private tutor

FlixFluent

2.20Γ—

~1,000h β€” 55% less time

Duolingo
9.9yrs
0.61Γ—
Rosetta Stone
7.7yrs
0.79Γ—
Pimsleur
6.8yrs
0.88Γ—
Language school
6.0yrs
1.00Γ—
Anki (SRS)
4.7yrs
1.29Γ—
Private tutor
4.7yrs
1.29Γ—
FlixFluent ✦
2.7yrs
2.20Γ—
App-basedTutor / classFlixFluent

Years calculated at 1h/day pace. Multiplier = 2,200h benchmark Γ· method hours. Based on FSI / U.S. National Training Laboratories estimates compiled for English-speaking learners reaching professional working proficiency in Korean; your own distance to Korean may be shorter or longer. Values below 1.0Γ— require more hours than the benchmark. Duolingo estimate from Vesselinov & Grego (2012). Rosetta Stone and Pimsleur from independent learner surveys. Anki from SRS efficacy literature (Kornell 2009). Private tutor from FSI Category data. FlixFluent estimate combines contextual acquisition (Nation 2001; Webb & Nation 2017) with spaced repetition, reflecting ~15–20% compounding efficiency gain.

* Benchmark hours are FSI estimates compiled for English-speaking learners reaching professional working proficiency. Your own distance to the language depends on your native language and prior exposure.

Creators who got there, learning from what they love.

Teachers and learners who already speak the language, on how FlixFluent fits into their day.

Fit check

Is FlixFluent for you?

Tick what's true. We'd rather you skip the trial than pay for the wrong tool.

0 of 6

Nothing ticked. If you're still learning the alphabet, or you only watch on a phone, FlixFluent isn't the right tool yet.

FlixFluent pricing β€” simple plans with 7-day free trialOne simple plan. Priced your way.

Everything you need to turn streaming into learning. Pay monthly, yearly, or once for life β€” and any discount applies to all three. Start free, cancel anytime.

30-day money-back guarantee on every plan β€” including lifetime.

  • Full refund within 30 days of any charge β€” monthly, yearly or lifetime.
  • No questions asked. One email to is enough.
  • Cancel during the trial and there's nothing to refund β€” you were never charged.

$13.25/monthbilled annually

Yearly - $159

Save 20% vs monthly

Commit to the year your fluency actually needs.

Start your free trial

30-day money-back guarantee

One private lesson costs about $50. FlixFluent is $17 a month, for every show you watch.

Learners who commit up front stick with it β€” and sticking with it is what gets you to fluency. Same full access, one payment a year.

$17/month

Monthly

7-day free trial

Full access to all FlixFluent features. No commitment, cancel anytime.

Start your free trial

30-day money-back guarantee

One private lesson costs about $50. FlixFluent is $17 a month, for every show you watch.

  • Dual subtitles on Netflix & YouTube
  • Word & sentence deconstruction: the grammar, explained in place
  • Context-aware translations, not dictionary lookups
  • Virtually unlimited AI credits (only gated to prevent abuse)
  • The Digger β€” click deconstructed words to dig deeper into their meaning
  • FSRS flashcards built from the words you click, in the web app, on your phone too
  • Auto pause & line navigation controls
  • Romanisation for non-Latin scripts
  • In-context pronunciation audio β€” hear any word as it's pronounced in that exact sentence
  • The web app, on your laptop or your phone's browser: FSRS trainer, CEFR tests, My Dictionary with Anki/CSV import

$399one-time

Lifetime

Pay once

Every feature, and every feature we ever ship, forever.

Get lifetime access

30-day money-back guarantee

About the price of 8 private lessons, and it never expires.

You're not just buying access β€” you're backing FlixFluent and the community shaping it. Thank you for believing in us.

Free bonus: Real Korean Conversations $500 value

The complete 4-month speaking program β€” foundation, habits, and real conversation confidence β€” included when you start your trial today.

Do you have a question? Here's the answer.

Didn't find what you're looking for? Write us an email at .

    • What's the difference between FlixFluent and other language apps?

      No curriculum: you choose, we explain. Most apps pick the content and the level for you. FlixFluent is a browser extension that runs on whatever you already watch on Netflix and YouTube: hover a word for its meaning in that scene, click it for the grammar explained in place, open the whole line for a full breakdown, all in your own language. Everything you click is saved to the web app as flashcards.

    • Why do I need to enter payment details for the 7-day trial?

      You won't be charged upfront. We ask for payment info to prevent abuse. You can cancel anytime from Settings in the web app. If you cancel within the 7-day trial, you pay nothing. Your info is secure, handled by Stripe.

    • Which streaming services does FlixFluent support?

      Netflix and YouTube, in Chrome and other Chromium browsers on a laptop or desktop. The title needs a subtitle track in the language you're learning. In beta, the extension also works on any website while you read.

    • What level do I need?

      You should be able to read the script and know a few hundred words. From there, dual subtitles, hover translations and the explanations carry you, and the deeper breakdowns become more useful as you progress. If you're on day one, learn the alphabet first and come back; the explanations will read as noise before that.

    • What if someone watches the same show as me β€” will we get the same lesson?

      FlixFluent's AI analyzes each subtitle in the context of the full scene β€” the surrounding dialogue, the grammatical role of each word, and your native-language pair. That means 'set' in a cooking scene gets a different breakdown than 'set' in a tennis match.

    • How much does FlixFluent cost?

      FlixFluent is $17 per month with a 7-day free trial, which is less than one private lesson; $159 per year (20% off); or a one-time $399 lifetime purchase. There are no long-term contracts, and you can cancel anytime from your account settings.

    • Is FlixFluent available in multiple languages?

      Yes. You can learn any of 27 languages from any of the others, and the extension and web app interface comes in 24 languages, so you don't need English to use FlixFluent.

    • How do I install FlixFluent?

      FlixFluent is a browser extension plus a web app. Install the extension from the Chrome Web Store (it works in Chrome, Edge, Brave, Opera and other Chromium browsers), open Netflix or YouTube, and sign in. Your flashcards, tests and dictionary live in the web app at app.flixfluent.com, which also works in your phone's browser. A mobile app is in testing.

    • Is support available if I need help?

      Absolutely! Our support team is ready to help you. You can email us anytime at and we'll get back to you quickly.

    • How do I sign in to FlixFluent?

      FlixFluent uses secure sign-in through your existing accounts, so there is no separate password. Choose Continue with Google, Microsoft, Kakao or Naver in the extension popup or at app.flixfluent.com.

    • Is my payment information safe?

      Absolutely. FlixFluent does not process or store any payment information directly. All payments are handled securely by Stripe, a leading payment processor trusted by millions of businesses worldwide. We only keep the bare minimum data needed to manage your subscription β€” your email and account details. Your card information never touches our servers.

    • How does the referral program work?

      Every subscriber gets a unique referral code. Share it with friends β€” when they subscribe and make their first payment, it's a confirmed referral. Each confirmed referral earns you 1 free month added to your next billing cycle.

    • When do I get my free month?

      As soon as your friend makes their first payment. The free month is automatically applied to your next billing cycle.

    • Do free trials count as referrals?

      No. Your friend must convert from the free trial to a paid subscription. The referral only counts once their first payment goes through.

    • What if my referred friend refunds or cancels?

      If your referred friend cancels their subscription, the referral is revoked and any unused credit is removed. Free months already applied to your account are not taken back.

    • Is there a referral limit?

      No limit at all. The more friends you refer, the more free months you earn.

    • Do I have to follow a course?

      No. There is no lesson 1, no curriculum and no catalogue. You pick the show, the creator or the page; FlixFluent explains whatever is on screen. The learners who stay with us are the ones who choose their own content, so we won't take that away.

    • Does it replace my tutor, Anki or my TOPIK/JLPT app?

      No, and it doesn't try to. Keep them. FlixFluent is the part none of them do: the sentence in front of you, explained the moment you hear it, and saved so you can review it later. Customers who also pay for a tutor or a test-prep app tell us that is the gap it fills.

    • What should I watch?

      Whatever you would watch anyway: dramas, variety shows, vlogs, interviews, films. Conversation-heavy content teaches the most. Leave news, lectures and startup talks for later; they are too dense to learn from and too demanding to relax into.

    • What is FlixFluent, in one paragraph?

      FlixFluent is a Chrome extension for Netflix and YouTube that shows dual subtitles and explains any word or sentence in place, in your language: its meaning in that scene, the grammar, the endings and its role in the line. Every word you click becomes a spaced-repetition flashcard (FSRS) in the companion web app at app.flixfluent.com, which also has CEFR tests and a personal dictionary. It supports 27 languages in any pair, costs $17 a month after a 7-day free trial (or $159 a year, or $399 once), and a mobile app is in testing.

    • Do you work with schools and universities?

      Yes. School accounts give a class its own code and student seats, and the teacher sees who is active. Email with the number of students and the languages, and we'll set it up.

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