Architecting for Privacy: Building a 100% Offline Geofencing Engine on Android

Automated excerpt

When I started building Muffle, the problem wasn't just 'make the phone silent. ' It was creating a system that could handle multiple, overlapping, and context-aware rules without leaking location data or draining the battery. If your app misses a single silence event, the user will uninstall it immediately. Always design for the 'worst-case' environment: low GPS signal, aggressive battery-saving background killers, and users who turn off notifications.

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