This app puts your phone on vibrate mode either for an amount of time, or until a certain time. For example, if you have a meeting that will last an hour, set Timed Silent for an hour, and at the end of the meeting your phone will unsilence your phone for you, so you won't miss a phone call! For students, if your class is over at 3:30 PM, just set the time, and your phone will unsilence itself at 3:30, so you don't forget! Never again will you miss a call, text, or email because you forgot to turn your phone's ringer back on.