For your information, we gather some global statistics of your account, mainly the active users and messages for all your apps. This can be found via the Stats tab:

stats tab

In this area we will find the total active users plotted in a gauge chart, which will give you, in quick glance, an idea of how close you are to your account's limit:

active users chart

You can also find the total amount of messages created in all your apps:

total messages

For these same metrics, you will be able to see a time series chart for the active users growth in your account:

user growth

And a time series chart for the messages created in your apps:

messages overview