Your data stays in this browser.

This preview has no account system, advertising, or third-party analytics.

What is stored

Browser storage holds exercise sessions, review schedules, first-answer outcomes, hint and audio counts, completion dates, your time zone, and display settings. The current draft is saved to let you resume after a refresh. When you move on from a question, its raw answer is removed from the session.

Feedback reports

Feedback is saved locally and downloaded as a JSON file. It is not sent automatically. You can explicitly choose to include your submitted answer in an exercise report.

Network requests

The site requests its own pages, scripts, and prerecorded audio. The hosting provider may process normal connection logs. Exercise answers are not sent to an online grading service.

Export and deletion

Open Settings to export your progress or permanently clear local practice data. Clearing your browser’s site data also removes progress. No cloud backup or recovery is available in this version.

Shared devices

Anyone using this browser profile can see its saved progress. Use a separate browser profile or clear the data when you finish on a shared device.