LanguageShadow: AI Shadowing for YouTube™

Master any language on YouTube with AI shadowing and dual subtitles. Your real-time pronunciation coach.

LanguageShadow turns any YouTube™ video into active speaking practice. Pick a subtitle line, repeat it out loud, and get an AI pronunciation score on every word — built for learners who want to speak, not just watch. How it works 1) Pick — Click any subtitle line on YouTube™ with the dual-subtitles overlay 2) Listen — Hear it in the original speaker's voice, at full speed 3) Repeat — Speak the line into your microphone 4) Score — AI grades your pronunciation against the line, phoneme by phoneme 5) Improve — Retry until it feels natural, or move to the next line 6) Track — See your accuracy across sessions in the side panel Key features • Dual subtitles on YouTube™ — your native language alongside the one you're learning • Line-by-line shadowing — pause, replay, and repeat any caption with one click • AI pronunciation scoring — phoneme-level feedback, not just a single accuracy number • 33 languages and regional voices — English (US/UK/AU/CA/IN), Spanish (Spain/Mexico), French, German, Italian, Portuguese (Brazil/Portugal), Russian, Mandarin (CN/HK/TW), Japanese, Korean, Arabic (Egypt/Saudi), and more • Side-panel progress — track which lines you've nailed and which to revisit • Free for the core loop — 10 AI grades per day, with 3 grades before you sign in Why LanguageShadow • Active practice, not passive watching — most extensions show subtitles; this one scores how you sound • Real content, not canned dialogues — practice with the YouTube™ videos you already watch • Honest limits — Free: 10 AI grades/day. Pro: 1,000 grades/month for $7.99 (any applicable tax is shown at Paddle checkout before you pay) • YouTube™-native — practice without leaving the page, no separate course library to learn Perfect for • Intermediate and advanced learners moving from comprehension to fluent speaking • Students preparing for IELTS speaking, TOEFL speaking, OPI, Cambridge speaking exams, or job interviews in a second language • Self-learners using YouTube™ shadowing and caption practice as their main daily routine • Polyglots tuning accent and pronunciation across multiple languages • Anyone using comprehensible input who's ready to start producing speech, not just absorbing it Privacy We record audio only when you press the practice button, and use it solely for pronunciation scoring. Optional analytics is off by default. Full policy: https://languageshadow.com/privacy Install LanguageShadow and start speaking the language you're learning today.