By default the App process some tipical Apps but you can allow the App to get ohter Notifications Apps if you enabled an option at Settings menu to ask you every new App sendd a notification.
If you do not change anything, every new notification will vibrate twice.
You can try this App for 100 notifications, after that you can help the developer buying the Premium option to continue using this App. Watch at Menu App for that.
If you find any problema, please, write to us.