Local account and progress
Simulated resources use IndexedDB. Learning progress and preferences use browser storage. The application does not send your simulated account to a backend. Avoid entering actual passwords, cloud keys or private data into practice fields.
Network requests
The site downloads its HTML, code, styles and self-hosted fonts. Cloudflare delivers the website and can process ordinary request information under its own service policies. External links send you to another provider when you follow them.
Analytics, email and commercial content
No application analytics, advertising scripts or embedded email collection are enabled in this release. If those features are introduced, this page will describe them before activation. RSS is available without an email address.
Your controls
Use console export before resetting an account. Resetting removes the current simulated account; browser settings can remove all site data, including lesson history. Downloaded exports remain wherever you saved them and can contain your practice data.
Contact and updates
Contact [email protected] privately, or report a concern through the project issue tracker. Do not include secrets or personal data in a public issue. Last updated 4 October 2026.