It happened during a Friday prayer service. The room was silent, the imam was mid-sermon, and suddenly, my pocket erupted with a loud, upbeat ringtone from a group chat notification. I felt the collective gaze of a hundred people turn toward me. I fumbled to silence it, but in my haste, I accidentally turned the volume up. My face burned. I sat there, paralyzed, wishing my phone had simply known where I was and acted accordingly. That moment wasn't just embarrassing; it was the catalyst for building Muffle.
We have all been there. You walk into a medical appointment, a lecture hall, or a client meeting, and you forget to silence your device. Then, two hours later, you realize you missed three important calls because you forgot to unmute it. Existing solutions often felt clunky or invasive. Manual toggling is prone to human error, and many automation apps rely on persistent background location tracking that drains the battery and raises legitimate privacy concerns. I wanted something that felt invisible. I wanted a phone that respected the context of my surroundings without me having to perform constant manual maintenance or sacrifice my battery life for the sake of automation.
When I started designing Muffle, the immediate urge was to write a background service that pings GPS coordinates every few minutes. It sounds simple, right? You track the user's location, compare it against a database of coordinates, and trigger the AudioManager. However, I quickly realized this would be a disaster for both user experience and hardware longevity. Keeping a GPS sensor active or even polling network location in the background is a recipe for rapid battery drain and aggressive termination by the Android system's power management optimizations. Users would uninstall the app within a day if their battery plummeted.
