Honest comparison · 2026
Language Reactor vs Migaku
Both turn Netflix and YouTube into study material through a browser extension, with dual subtitles and click-to-define. Language Reactor is the lighter, more accessible option with a usable free tier. Migaku is the heavier, more configurable one, built around exporting high-quality cards into an SRS.
Bottom line
Language Reactor to watch, Migaku to mine
Pick Language Reactor if you mainly want to understand what you are watching, with lookups when you get stuck. Pick Migaku if the watching is really a card-collection exercise and you want every capture to arrive with audio, image and readings attached.
Feature-by-feature comparison
| Feature | Language Reactor | Migaku |
|---|---|---|
| Dual subtitles | Yes | Yes |
| Click-to-define | Yes | Yes |
| Anki export quality | Basic | Rich — audio, image, readings |
| Netflix support | Yes | Yes |
| YouTube support | Yes | Yes |
| Free tier | Generous | Limited extension features |
| Pricing | Free + paid upgrade | ~$5/mo per add-on |
| Setup effort | Low — install and go | High |
Based on publicly available feature documentation as of 2026. Confirm pricing on each tool's site before purchasing.
Best for: Language Reactor
Learners who want subtitle support with minimal setup, and who are watching for comprehension rather than card farming.
Best for: Migaku
Committed immersion learners with an established Anki habit who want the richest possible cards.
Worth knowing
Where InputDojo fits
Both are tied to video in a browser tab. InputDojo imports YouTube transcripts into a reader you can work through at your own pace — re-reading a line, saving words with their sentence, asking for a grammar explanation — and applies the same treatment to articles, files and pasted text. It also reports unknown-word density per video, so you can tell whether an episode is worth your time before watching it twice. JLPT and HSK tracks are free.
FAQ
Is Language Reactor still free?+
There is a real free tier plus a paid upgrade for advanced features. It remains the lowest-friction way to try this approach.
Can I use both?+
Yes, though they overlap heavily and both inject UI into the same pages, which can conflict. Most people settle on one.
Does either work on mobile?+
Both are built for desktop browsers. Mobile support is the weak point of the whole extension category.