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Learn from the content you already use

Learn from what you love.

Learn from videos, articles, and PDFs in place: click a word, save its sentence, and review it later with spaced repetition.

How it works
Interactive exampleDemo

Demo only · nothing is saved to your account

Reading excerpt

3 words to explore
Capture a word without leaving the page.

01 / Carnet de lecture

Le plaisir
de flâner.

Ce soir, je vais dans les rues du .

Les fenêtres s’allument, les conversations se mêlent. Pour une fois, rien ne presse.

Evening notebook

Select the underlined word to explore.

Your collection

0 saved

Build a small review queue

Choose an underlined word to start your collection.

Works where you already are

YouTubeNetflixVimeoCrunchyrollPrime VideoAny websitePDF

How it works

A simple loop: look up, queue, remember.

Ikhou is designed around the material you already use, not a canned curriculum.

  1. Look up a word

    Use the extension while reading, watching, or listening. Capture the word in the place you found it.

  2. Save the context

    Saved words sync into Ikhou with their sentence context, ready for review when you are.

  3. Review when ready

    Use spaced repetition, targeted tutors, and calm repetition to turn lookups into memory.

Built for real immersion

Context matters. Your content. Your pace.

Keep the sentence that taught you, learn from material you choose, and review at a pace that fits your routine.

Try an example

No streaks. No XP. No fake urgency.

The product tells the truth about what is due. You review because it matters, not because a game mechanic is yelling at you.

Your content, not ours.

Ikhou is strongest when it follows the media, articles, subtitles, and notes you already care about.

Spaced repetition that adapts to you, not a schedule.

The algorithm adapts quietly in the background while the content and context stay yours.

Languages

A world of words.

Study Chinese, Japanese, Korean, Spanish, French, German, Italian, Portuguese, Russian, and Vietnamese with the same context-first review loop.

Français

Fits documentary, essay, and reading-heavy study with calm review afterwards.

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FAQ

Questions learners ask before installing

Does Ikhou work on Netflix, YouTube, and Prime Video?

Yes. The browser extension adds clickable subtitles to YouTube, Netflix, Prime Video, Crunchyroll, and Vimeo, plus inline lookup on any website or PDF. Click a word mid-scene to look it up and save it without leaving the video.

How is Ikhou different from Language Reactor or Migaku?

Like those tools, Ikhou turns video subtitles into a learning surface. The difference is the review loop: every word you save keeps the sentence that taught it and flows straight into Ikhou's built-in spaced repetition, so capture and review live in one place instead of separate apps.

Can I export my words to Anki?

Ikhou has its own spaced-repetition review built in, so you do not need Anki to study what you capture. Words are saved with full sentence context and scheduled for review automatically.

Which languages does Ikhou support?

Ikhou works across major study languages including Spanish, French, German, Italian, Portuguese, Japanese, Korean, Chinese, and Russian, adapting the review path to each language.

Is Ikhou free?

The browser extension is free to install and the core capture-and-review loop is free to use. You create a free Ikhou account to sync your saved words across the extension and the web app.

Do I need an account to use the extension?

You need a free Ikhou account to sync lookups to your review queue across devices. Connecting takes a moment on ikhou.com after you install the extension.

ikhou

Start turning what you consume into what you know.

Get the extension, start capturing real material, and let Ikhou turn it into a calm review practice.