Privacy Policy for ZetaCoach
Last updated: 2026-05-25
ZetaCoach does not collect, transmit, or share any personal data.
What we store
All session data — including problem texts, response timings, scores, tier rank, and your settings — is stored locally in your browser using chrome.storage.local. This data never leaves your device.
What we don’t do
- We do not have a backend server.
- We do not transmit your data to the developer or any third party.
- We do not use analytics, tracking pixels, advertising, or telemetry.
- We do not request any personal information.
Third-party services
None.
Data deletion
You can erase all stored data at any time via Settings → Data → Erase All Data in the ZetaCoach dashboard, or by uninstalling the extension.
Permissions
ZetaCoach requests only the minimum permissions needed:
- storage — saves your sessions, settings, and tier locally
- tabs — detects open ZetaMac tabs and opens the dashboard
- scripting — writes the Coach’s drill configuration into the ZetaMac settings form
- host_permissions (zetamac.com only) — required to inject the live tracking panel onto arithmetic.zetamac.com
For questions or concerns about this policy, please open an issue at
github.com/zyrxun/zetacoach-privacy/issues.