Categorical total of notifications
Provide total notifications for apps with same functions.
1 missed call (Phone app)
1 missed call (Skype app)
1 unread SMS/message (Messages app)
1 unread SMS/message (Kik Messenger app)
1 unread email (Email app)
1 unread email (Gmail app)
2 missed calls
2 unread SMS/messages
2 unread emails
As you can see from the example above, you can combine the total number of notifications for apps that are in the same category or have the same functions.