Import
Bring your own book, video or audio – or pick ready-made content.
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.
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).
Classic readers are great for collecting words. FlowLingua is built to understand in flow.
| Typical readers | FlowLingua | |
|---|---|---|
| Unknown word | Tap, wait for the translation, return to the text | Already there – you just keep reading |
| Grammar | Word-by-word translation hides the sentence structure | Birkenbihl decoding makes the structure visible |
| Translation | Word or sentence – per tap | Word by word & sentence by sentence – at the same time |
| Reading & listening | Often separate, rarely in sync | Karaoke-style sync – the core of the method |
| Your own content | Usually possible, effort varies | EPUB, PDF, DOCX, YouTube & MP3 – in 1 click |
| Devices | Often web-first, apps sometimes limited | iOS, Android & web app – synced everywhere |
Three steps instead of drilling vocabulary – the app handles the rest.
Bring your own book, video or audio – or pick ready-made content.
Everything is already translated – word by word + sentence by sentence. No clicking.
Press play and let the audio guide you. The translation is there when you need it.
Every feature follows one goal: grasp the language intuitively, not by memorizing.
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.
Listen and read at the same time. The text is highlighted in karaoke style in sync with the audio – word by word.
Upload EPUB, PDF, DOCX, YouTube videos or audio. FlowLingua automatically creates interlinear translations with word timing.
Unknown words are detected automatically. With definitions, alternative translations and language levels (A1–C2) you build your vocabulary deliberately.
Stay motivated with daily streaks, XP and detailed statistics about your progress.
Download content and keep learning on the go – without internet. Your progress syncs automatically.
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.
Word-for-word decoding makes grammar intuitively understandable – ideal if you don't understand much yet.
Reading and listening at the same time with translation – for listening comprehension and vocabulary.
Understandable content that genuinely interests you – the key to becoming fluent.
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.

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

Streaks, XP and your progress at a glance.

Import documents, audio, YouTube or audiobooks.
Flow costs €2.99. Audio is an optional add-on for MP3 & audiobooks.
Your language-learning subscription
instead of €4.99 · Early Bird
For heavy users · all Flow features + more
Includes all Flow features
Optional · for MP3 & audiobooks
Builds on “Flow”
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.
No ads, no tracking, no analytics services. Your content lives on servers in the EU.
Learn with your own content: books, PDFs, videos and audiobooks – not with prefabricated lessons.
One app in four languages – German, English, Spanish and French.
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.
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