Maybe you know this situation: Your phones lays on your desk, you're in the kitchen and you get called. You do not hear your ring and when you come back to your desk, you don't notice that you were called because your device has no notification LED or you don't notice that little blinking...

Vibration Notifier offers a solution to this scenario: When you have a missed call, unread SMS or any other event*, the app keeps vibrating every X minutes for Y times or until you turn on the display of your device.