Stay in flow. Not in the dictionary.

Like a native speaker: listen, read, understand.

Your own books, videos & PDFs – translated word for word, synced to the audio. No clicking.

Read along. Listen along. Understand instantly.

▶ Press play = live demo right here · “Try it for free” opens the fullscreen web app

Already translated. No clicking.

Understand instantly No clicking Word by word + sentence by sentence Synced to the audio Your own content iOS · Android · Web app
The essentials

FlowLingua in 3 sentences

  1. Read without clicking: every line arrives with a word-for-word translation and a natural sentence translation – you read foreign-language books in flow instead of tapping words.
  2. Your own content: import EPUB, PDF, DOCX, YouTube or MP3 – FlowLingua prepares everything automatically in 23 languages.
  3. Listen in sync: your audio runs in step with the text, karaoke-style – the Birkenbihl method, made digital.

Facts: free voluntary reading is the strongest predictor of vocabulary growth (Krashen, The Power of Reading). Around 44% of web readers who press play finish the text to the end (FlowLingua data, 26 Sep – 24 Oct 2026).

The difference

Other apps make you click. We let you read.

Classic readers are great for collecting words. FlowLingua is built to understand in flow.

Typical readers FlowLingua
Unknown wordTap, wait for the translation, return to the textAlready there – you just keep reading
GrammarWord-by-word translation hides the sentence structureBirkenbihl decoding makes the structure visible
TranslationWord or sentence – per tapWord by word & sentence by sentence – at the same time
Reading & listeningOften separate, rarely in syncKaraoke-style sync – the core of the method
Your own contentUsually possible, effort variesEPUB, PDF, DOCX, YouTube & MP3 – in 1 click
DevicesOften web-first, apps sometimes limitediOS, Android & web app – synced everywhere

Is FlowLingua right for you?

  • You want to understand and speak foreign languages with science-based methods – Birkenbihl, Listening-Reading, Comprehensible Input, Shadowing. FlowLingua is built on 10 years of method research.
  • You want your own private library: your books, videos and audiobooks – no filler content you never chose.
  • You want to stay in flow instead of tapping every word – everything already translated, word by word and sentence by sentence.
  • You want to read anywhere: iOS, Android & web app – fully synced.

Guides & comparisons

It's that easy

Read. Listen. Understand. Done.

Three steps instead of drilling vocabulary – the app handles the rest.

1

Import

Bring your own book, video or audio – or pick ready-made content.

2

Understand

Everything is already translated – word by word + sentence by sentence. No clicking.

3

Stay in flow

Press play and let the audio guide you. The translation is there when you need it.

Features

Built for deep understanding

Every feature follows one goal: grasp the language intuitively, not by memorizing.

Interlinear reader

The Birkenbihl method in its purest form: word-for-word translations directly under the original text. You grasp grammar intuitively – without drilling rules.

I am learning a new language.

I am learning a new language.

Audio sync

Listen and read at the same time. The text is highlighted in karaoke style in sync with the audio – word by word.

Import your own content

Upload EPUB, PDF, DOCX, YouTube videos or audio. FlowLingua automatically creates interlinear translations with word timing.

Vocabulary trainer & dictionary

Unknown words are detected automatically. With definitions, alternative translations and language levels (A1–C2) you build your vocabulary deliberately.

Gamification

Stay motivated with daily streaks, XP and detailed statistics about your progress.

Offline & anywhere

Download content and keep learning on the go – without internet. Your progress syncs automatically.

Why FlowLingua

Three proven methods. One flow.

Three methods that polyglots have used for decades – combined in one app. One principle: you learn a language through understanding. More on this in the overview: The best methods according to science.

01

Birkenbihl

Word-for-word decoding makes grammar intuitively understandable – ideal if you don't understand much yet.

02

Listening-Reading

Reading and listening at the same time with translation – for listening comprehension and vocabulary.

03

Comprehensible Input

Understandable content that genuinely interests you – the key to becoming fluent.

Why FlowLingua exists

My story

I wanted to learn languages – but memorizing vocabulary and grammar put me off. So I researched how polyglots really do it. Their common principle: understand, don't memorize.

With that I learned two very different languages. Today I think in those languages and give talks without notes – I speak without thinking about grammar, because I feel what's right, like in my native language.

That's why I built my program as an app and web app – so you can go the same way.

What to expect:

After 15 minutes – words stick while you listen and read.

After 2–3 hours – you get a feel for the grammar – completely intuitively.

After 1–2 weeks – people no longer speak “too fast”.

After 1–2 months – free, simple conversations and thinking easily in the language.

App preview

This is what FlowLingua looks like

FlowLingua Flow Reader with Pinocchio text and interlinear translation

Flow Reader

Word-for-word translation – synced to the audio.

FlowLingua statistics with streak and vocabulary

Statistics

Streaks, XP and your progress at a glance.

Import content into FlowLingua: document, audio, YouTube or audiobook

Your own content

Import documents, audio, YouTube or audiobooks.

Pricing

Start your journey

Flow costs €2.99. Audio is an optional add-on for MP3 & audiobooks.

Power

For heavy users · all Flow features + more

9,99 € / month

Includes all Flow features

  • 1,000,000 words / month (≈ 7 novels)
  • All Flow features
  • Unlimited imports
Start 7-day free trial

Audio add-on

Optional · for MP3 & audiobooks

+2,99 €/ month

Builds on “Flow”

  • 10 hours of audio / month (≈ 1 audiobook)
  • MP3 transcription (Whisper)
  • Word-accurate karaoke timing
  • Audiobooks & podcasts
Start 7-day free trial

7-day free trial · Cancel anytime.

🎉 Early bird offer: the launch price applies to the first 100 subscriptions – after that €4.99/month or €39.99/year.

Trust

What you can rely on

🔒

No ads, no tracking, no analytics services. Your content lives on servers in the EU.

DPrivacy
EU servers · no ad SDKs
📖

Learn with your own content: books, PDFs, videos and audiobooks – not with prefabricated lessons.

FYour content
EPUB · PDF · DOCX · YouTube · Audio
🌍

One app in four languages – German, English, Spanish and French.

SLanguages
DE · EN · ES · FR
FAQ

Frequently asked questions

The Birkenbihl method is based on decoding texts: every sentence is translated word for word into your language. This lets you grasp the structure of the foreign language intuitively – without memorizing vocabulary or grammar rules.

You can import EPUB books, PDF documents, DOCX files, YouTube videos and audio files. FlowLingua automatically turns them into interlinear translations with word timing.

Yes. With a Flow subscription you can download content and learn completely offline. Your progress syncs automatically as soon as you're back online.

Yes. Flow and the audio add-on can be cancelled at any time. After cancelling, you keep your access until the end of the paid period.

FlowLingua supports a wide range of language pairs. You choose your native language and the language you want to learn – the translations are created automatically in your native language.

Chinese, Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish and Ukrainian – and new languages are added all the time. All languages at a glance

FlowLingua runs in the browser, on Android and on iPhone – your account and your progress sync across all your devices.

No. The word-for-word translation makes texts understandable even if you don't know a single word yet – and the better you get, the less help you need.

Shadowing is great for learning to speak: repeat sentences right after the native speaker – first aloud along with them, then slightly delayed. This works with any text that has audio. Reading along aloud also trains your pronunciation. More about this on the method page.

FlowLingua focuses on real content you understand – not vocabulary quizzes and points. You learn with books, videos and audio that genuinely interest you.

Do you understand less than half? First skim to see what it's about. Then press play and silently read along the word-for-word translation for the unknown words while you hear the original – the words stick. If you understand more than half, just follow the audio and only glance at the translations when you need to.

Every step has a clear goal instead of a time limit: 1) If you understand less than half, skim the text beforehand until you know what it's about. 2) Read along silently until you understand everything effortlessly – even without looking at the text. 3) Passive listening is optional – as long as you like. 4) Read along aloud and do shadowing until you can keep up half a second behind without the text.

Ready for your flow?

The web app is live, and the Android and iPhone apps are available now on Google Play and the App Store.

Web app available now · 7-day free trial · no credit card required