Language Reactor

Free + paid optionsListening & Video Toolslanguagereactor.com

Best for: Watching Netflix and YouTube with dual subtitles

Overview

Browser extension that shows dual subtitles on Netflix and YouTube, with pop-up translations and tools to save words while you watch.

Strengths

  • Dual subtitles with one click
  • Works on Netflix and YouTube

Drawbacks

  • Some features need the paid plan

Alternatives to Language Reactor

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ToKini Andy

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Free + paid options

YouTube channel with hundreds of free Japanese lessons, best known for a series that walks through every chapter of the Genki textbooks, explaining the grammar and building practice sentences. Relaxed and funny enough to listen to on the go. His website, tokiniandy.com, adds paid companion courses with exercises and tests for Genki and Quartet.

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Nihongo con Teppei

Listening practice for beginners and up
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Podcast in natural, slow Japanese, with a beginner series and longer episodes for more advanced listeners.

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Online Japanese Accent Dictionary

Learning pitch accent
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Online Japanese Accent Dictionary (OJAD) from the University of Tokyo: shows the pitch accent of words and how it changes when verbs and adjectives conjugate.