Real-time notifications (the red circle)

The red circle with a number in it (next to a main navigation tab) indicates that there are unread or new messages or an event or task is assigned to you.
For example: if you see the number 6 in a red circle next to the Messages tab, this indicates six unread messages.

If there is a red circle with the number in it next to, tasks for instance, this indicates three incomplete tasks assigned to you; or a number 2 next to the Calendar Tab indicates that there are two events scheduled for today.

If you are a member of multiple BandHubs, the red circle in the top 'Switch Band' menu indicates activity inside another BandHub.