Chorus: AI Listening Lab

Turn podcasts, videos, and voice memos into language lessons with word-level subtitles, AI explanations, and Echo record-and-compare practice.

Chorus is an AI listening lab for people who learn languages by ear.

Import what you already want to listen to — a podcast episode, a YouTube video, a voice memo, a video from your library — and Chorus turns it into a shadowing lesson: word-level subtitles, reading aids, a translation into your native language, and an AI tutor that explains the exact sentence you are stuck on.

LISTEN IN THREE LAYERS The original line, exactly as spoken. A reading aid above each word — furigana for Japanese, romanization where it helps. Translation in your native language only where you need it, so you can read the original first and check yourself after.

PRACTISE WITH ECHO Loop a single line and say it out loud. Listen, Recall, Speak and Play modes drill one sentence until it feels natural — or turn on Auto Echo and shadow hands-free, then record yourself and compare.

ASK WHY, NOT JUST WHAT Tap Explain on any line: a plain-language translation, a vocabulary list with readings, the grammar patterns actually at work in that sentence, and notes on why it is phrased that way. Then ask your own follow-up questions.

FIND SOMETHING WORTH LISTENING TO 30 hand-picked podcasts in Japanese, English, German, French, Spanish, Chinese and Korean — beginner, conversation and exam prep.

IMPORT FROM ANYWHERE

• YouTube URL: play it in the app, no download needed
• Files: audio and video from your device
• Photo album: videos from your library

YOUR AUDIO STAYS YOURS Playback happens locally. Playing a file you imported never requires an account. Sign in only for AI subtitles and explanations, and your allowance follows your account across devices.

FREE AND SUBSCRIPTION Every account starts with 60 minutes of AI subtitles and 20,000 characters of translation — enough to hear what the app actually does. Basic Monthly (1 month): 5 hours of subtitles and 300,000 characters of translation per month. Pro Monthly (1 month) and Pro Yearly (1 year): 30 hours of subtitles per month, unlimited translation and explanation. Subscriptions renew automatically until cancelled; manage or cancel in your App Store settings. Prices are shown in your local currency before you buy.

Privacy Policy: https://ace.ningxiaochen.com/chorus/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://ace.ningxiaochen.com/chorus/support