Sudoku Zen

Privacy Policy

Effective Date: April 2026

Data Sovereignty

RatzBrain prioritizes user privacy. All local game information, including streaks and settings, is stored directly on your hardware via secure local storage. We do not maintain off-device databases of your personal game states.

AdSense and Tracking

We utilize Google AdSense to sustain our free platform. Google uses cookies to serve ads based on your visits to this site. You can manage these settings via Google's Ad Settings portal.

Firebase Analytics

Anonymous interaction data (e.g., 'level_completed') is collected via Firebase to help us optimize the puzzle generation engine. No personally identifiable information is ever transmitted.