Tap Nations stores game progress locally in your browser using localStorage. Optional accounts mirror a single save snapshot to a managed Postgres database. On the production site we use Google Analytics for usage measurement and Google AdSense / Google Ads to keep play free; both services load only on tapnations.com and never in development or the admin console. We do not collect payment data and analytics events are not linked to your real identity. Manage personalised advertising at adssettings.google.com or contact [email protected] with any questions.