You didn't need a smart meter for that.
As winston has said, you don't need a 'smart' meter for that.
I have extensive consumption monitoring of my own, but do not have a 'smart' meter. In fact, what I have is actually 'smarter' than those meters, since it gives me the ability to monitor consumption of individual circuits, or groups of circuits.
There is no off the shelf system I am aware of, to monitor gas consumption, apart from a SM.