LinguaFlow: Learn Chinese

Turn any video you own into a Mandarin lesson. Tappable subtitles with pinyin and HSK levels, AI grammar help, and pronunciation practice, all on your device.

LinguaFlow turns videos you already own into interactive Mandarin Chinese lessons.

Import a video and LinguaFlow transcribes and translates it right on your device — then turns the subtitles into something you can actually learn from.

TAP ANY WORD Every word in the subtitle is tappable. Get instant pinyin, meaning, HSK level and how common the word is, from a bundled CC-CEDICT dictionary with over 100,000 entries. No internet required.

UNDERSTAND THE GRAMMAR Stuck on why a sentence works the way it does? Ask for an AI explanation covering the grammar, the sentence structure, and natural usage examples — written in your language.

PRACTICE SPEAKING Shadow any line, record yourself, and get a pronunciation score covering character accuracy, tone accuracy and fluency, plus specific coaching on what to fix.

REMEMBER WHAT YOU LEARN Save words and sentences as you go. LinguaFlow schedules them for review using spaced repetition, so they stick.

YOUR VIDEOS STAY YOURS Transcription and translation run entirely on your device using Apple's built-in Speech and Translation frameworks. Your videos, audio and transcripts are never uploaded. Only a single sentence is sent to our server when you explicitly tap an AI feature.

CHOOSE YOUR LANGUAGE Translate Mandarin into English, Bahasa Indonesia, Japanese, Korean, Spanish, French, German, Portuguese, Italian, Russian, Arabic, Thai or Vietnamese.

GOOD TO KNOW • Works with MP4, MOV and M4V files you already have. MKV is not supported. • There is no YouTube download feature — import videos you own or have the rights to use. • The translation step needs the app open in the foreground. • Pronunciation scoring is an estimate based on speech recognition, not a phoneme-level analysis. • Word-by-word highlight timing is precise on iOS 26 and approximate on earlier versions.

FREE AND PRO Free includes a 3-video library and 5 AI requests per day. LinguaFlow Pro removes both limits for $4.99/month or $29.99/year, with a 7-day free trial on the yearly plan.

Privacy Policy: https://suryapradipta.github.io/linguaflow-privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/