This application runs in the background and will turn the ringer off when there is an active event in the calendar. When the event is over it will turn the ringer back on. It does not turn the ringer off for all day events and events that are marked as free. The app will look at the default ringer and default silent settings to determine what state to set the ringer to. 这个应用程序在后台运行，并会关闭振铃时，有一个活跃的日历中的活动。当活动结束时，它会重新打开振铃。它不会关闭铃声一天的所有活动和事件被标记为空闲。 该应用程序将在默认的铃声和默认沉默的设置，以确定什么样的状态来设定铃声。
1.06 - added airplane mode for silent option. Note: due to android restrictions on 4.2 and above the airplane mode feature will not work. 1.05 - fixed bug where selected calendars where not being saved properly. 1.04 - changed list of calendars to display the friendly name of the calendar if available. 1.03 - fixed bug where app was showing it was off but was stil on. 1.02 - added ability for app to only pull events from specific calendars.