Shadow Master
Speak & Learn — Language Mastery Through Shadowing
Shadow Master turns almost any captioned YouTube video into a complete speaking lesson. Not scripted textbook audio — real people, at real speed, on subjects you actually care about. Listen to a line, echo it back, then compare your voice against the native speaker.
Download on Google Play
Real Content
Any captioned YouTube video becomes a lesson — news, vlogs, interviews, lectures, songs. Material you would watch anyway.
Echo Shadowing
Listen to a line, record yourself with a live waveform, then play both back side by side or together. That comparison is where pronunciation changes.
Karaoke Captions
Every word highlighted in time with the speaker, with your own language above and romaji, pinyin or phonetics below.
Instant Dictionary
Hold any word for meanings, pronunciation, real example sentences and images — then save it to your deck in one tap.
Spaced Repetition
Saved words return exactly when you are about to forget them. Every card shows its stage: New, Learning, Young, Mature, Mastered.
Dictation Practice
Type what you hear. Checked forgivingly — case, punctuation and small typos never count against you, because the point is hearing the words.
How Shadowing Works
You hear a line and repeat it immediately, matching the speaker's rhythm, stress and intonation. It is how professional interpreters and actors train, and it is the fastest way to fix pronunciation and build fluent speech.
Search like you would on YouTube, paste any link, or let the library suggest videos in the language you are learning — verified by the language actually spoken, not just the subtitle track.
Each word lights up in time with the speaker. Your native language sits above the line and the romanisation below, so an unfamiliar script is never a wall.
Double-tap any line to drill it: listen, record yourself, then compare. Switch between the original speaker and a clear robot voice, and trim the line end if a caption runs long.
Hold a word for the full dictionary and save it. Your deck schedules reviews automatically so vocabulary sticks instead of fading.
Use Cases
🗣️ Hearing Your Own Accent
Echo a line, record yourself, then compare the two waveforms side by side. Hearing the gap is what actually changes your pronunciation.
📋 A Video You Found
Copy a YouTube link anywhere on your phone and Shadow Master offers to open it, so anything you stumble across becomes a lesson.
✍️ Testing What You Heard
Dictation mode hides the captions and asks you to type what was said, which catches the words you only thought you understood.
📚 Words Worth Keeping
Tap any word in a video to look it up and send it to your vault, then review by hardest first or due soonest when you have a spare minute.
🔤 Unfamiliar Scripts
Latin transliteration sits under Arabic, Hindi and Russian captions, so an unfamiliar alphabet does not stop you shadowing the sound.
🎯 Staying Consistent
Daily goals, activity rings and streaks are tracked per language, so a week on Japanese does not quietly erase your Spanish.
Languages
English, Spanish, French, German, Italian, Portuguese, Dutch, Russian, Polish, Ukrainian, Czech, Swedish, Norwegian, Danish, Finnish, Greek, Turkish, Arabic, Hebrew, Hindi, Bengali, Urdu, Tamil, Telugu, Japanese, Korean, Chinese (Mandarin and Cantonese, Simplified and Traditional), Thai, Vietnamese, Indonesian, Malay, Filipino, Swahili, Romanian, Hungarian, Bulgarian, Serbian, Croatian and more.