It was the middle of a Friday afternoon, and I was sitting in the back row of a lecture hall when my phone decided to perform a full-volume rendition of an upbeat ringtone. The professor stopped mid-sentence. Two hundred students turned their heads in unison. My face burned as I scrambled to silence the device, fumbling with the volume rockers while the notification bar felt impossibly far away. I had forgotten to flip the switch before entering the room, and that singular moment of social friction became the catalyst for building Muffle.
Most Android users live in a perpetual state of manual sound management. We go to the movie theater, the gym, the mosque, or a board meeting, and we trust our brains to remember a task that is inherently forgettable. When we fail, we experience that awkward silence or the frantic apology. Existing solutions often felt like overkill, requiring heavy cloud dependencies or offering rigid, subscription-locked features that felt disconnected from the privacy-centric nature of a sound utility. I wanted something that lived entirely on the device, worked silently in the background, and didn't require me to pay a monthly fee just to stop my phone from ringing during prayer or a quiet dinner.
