I understand from your desciption you want application which can track the time, how much time user has spent on twitter and facebook.
I have done projects in various domains like healthcare, educational and utility products. My main motto to do the project is to satisfy the client as well as their end user. So the end user can also delight while using our application.
And I am eager to know your requirements very deeply so, we can work together and makes your idea to the reality.