Sellerboard Profit Analytics

I have been looking for an app like this for a long time. Using it for over 1 year, and it's the easiest way to have your business's numbers at hand. Great dashboard.
It may take a while to set up all the shipping rates, and it could be a bit more flexible on custom tax rates, etc., but I am quite happy with it. It got a bit more expensive recently, but so far, I don't know a better solution.
Good support as well.