Frequently asked questions

Shadowing focuses on matching pitch, rhythm, and intonation — not just the words. The extension scores your pitch contour against the speaker's, so you can see where your melody flattens or rises wrong.

Not on the free plan. Pitch detection and transcription run locally via Web Audio + Whisper.cpp WASM. Premium phoneme-level scoring is the only feature that sends audio to our server, where it's discarded after processing.

Any YouTube video that has English subtitles (manual or auto-generated). Quality is better with manual subtitles.

Yes — manage your subscription from the dashboard at any time. You'll keep premium access through the end of the billing period.