Privacy
Plain English, no dark patterns.
What we store
Clock Study stores your saved quizzes, saved worksheet templates, theme preference, and a stable anonymous ID in your browser's localStorage. Nothing leaves your device. You can wipe all of it from the Settings page.
Analytics
We use Fathom Analytics to count visits and understand which features get used. Fathom is privacy-friendly: no cookies, no cross-site tracking, no fingerprinting. See their privacy promise for details.
PDF generation
When you download a worksheet PDF, your worksheet configuration (level, question types, etc.) is sent to our server, the PDF is generated, and it is returned to your browser. We do not store the configuration or the resulting PDF.
Accounts
Phase 1 has no accounts. Clock Study works entirely without signing in. A future version will add optional Model Teaching accounts for sync across devices.
Children's privacy
Clock Study is designed for use by children with adult supervision. We do not knowingly collect personal information from anyone, child or adult.
Questions
Email questions or concerns through the Contact page.