The app is here which will never let you miss the calls of your loved ones specially when your cell phone is in silent or vibration mode. Just add your closed ones to the app from your contacts and the app will change the mode of your phone from silent or vibration mode to general mode whenever there will be a incoming from added numbers.
The app is very helpful in case of older people who by mistake put their cellphones on silent mode and then are not able to receive calls. In this scenario you can put this app in their cell phone and then add your number to the app. that's it. Now you will always be able to talk to them.