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Migaku vs Mirumoji: catalog facts
Migaku	Mirumoji
Freemium Can be started without a credit card; paid plans unlock full use.	Free Free and open source under the MIT licence.
Browser extension	Web, Self-hosted
Learn from content you already watch and read Works across popular streaming and social sites	Clickable word lookups in subtitles Whisper-based subtitle generation
Built as a Chrome extension Proprietary with paid plans	Only for learning Japanese Requires Docker setup
Browser extension	Self-hosted
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.