This neat application allows users to pick any place listed in Google Places, and set a Geofence around it so when a user enters within a settings defined radius, the app will launch silent mode. When the user abandons that area, the app will resume its normal mode.
This is very useful when entering hospitals, religious places, or any place where we don't want to bother other people.
App available in Spanish and English.
IMPORTANT NOTICE: There could be the case where the app won't make the phone silent when entering a geofence. This is the case where signal is weak or non-existent, so don't relay 100% that the phone will go silent.
For better results, make sure Wi-Fi is enabled and geofence radius is optimized.