Privacy policy

Last updated: 2026-11-11 · applies to v0.3.35

What we collect

ShadowCue collects no personal information and sends nothing to its operator. It has no server, no accounts and no usage analytics.

The following is stored only in your browser (Chrome extension storage) and is deleted when you remove the extension.

Lines you save with ☆, with the title, scene time and latest accuracy
Panel settings: mode, line-end behaviour, level and blank count, panel language, simple view, panel position and so on
Study record: time studied, blanks solved, lines spoken and practised per day, and your daily goal
Practice-set results: date, number of lines, how many were right, and your answer to "did it help?" (up to 500). They don't say which lines.
Fill-in quiz history: lines you worked on (up to 1,000), title and scene time, the answers and what you typed, and the result. It is exported only when you choose copy, mail or save.

The microphone is used only while you press 🎙 Speak and is switched off right after.
Your recording stays briefly in browser memory so you can play it back, and is discarded when you move to another line. It is never saved or sent anywhere by ShadowCue.
Speech-to-text uses Chrome's built-in speech recognition. Chrome sends the audio to Google for processing, under Google's privacy policy.

Meanings come from Chrome's built-in translator, on your device. Chrome downloads the translation model once.
The "📖 Dictionary" link opens a dictionary site in a new tab (Cambridge Dictionary with the English panel, Naver with the Korean panel), which then receives that word.

Subtitles of the title you're watching are used only to show and practise lines on screen.
Subtitles are never stored as a whole or sent anywhere. Only lines you save and quiz lines you work on stay on your device.

Nothing is shared with or sold to third parties.

When this policy changes, the date and version above are updated.

Operator: ShadowCue · shadowcue.tbeat.net

A contact channel will be listed on this page when ShadowCue is published on the Chrome Web Store.