Privacy Policy & Data Transparency

Zero Personal Data Collection

Hand Stitch Laboratory does not require account creation, logins, or submission of personal identifying information (PII). We do not run tracking pixels or biometric identification scripts.

Browser LocalStorage Use

To help you track which stitch techniques you have practiced and completed, the application uses standard browser localStorage under the key adsense20_stitch_progress_v1. This data remains strictly on your device and is never transmitted to any external server. You can wipe this data at any moment using the "Clear saved progress" button on the workbench.

Advertising & Third Parties

In accordance with development specifications, this local build does not execute live advertising or behavioral profiling scripts. Future production deployments will honor standard consent frameworks.