Metrics over time are often very hard to calculate in HubSpot. Do you want to know what a specific list's membership was three weeks ago vs. today? Or perhaps see a nice one-stop dashboard with both net new and total leads broken out by week or month?
While it's possible to do some of this in HubSpot, Demand Sage's KPI Report offers you the ability to quickly and easily grab things that are possible in HubSpot (leads/new leads by month), things that are impossible in HubSpot (list membership by week or month), and metrics from non-HubSpot sources (website traffic via Google Analytics) into one cohesive, comprehensive dashboard. It also allows you to add calculations to the metrics as they come through - leveraging the power of a spreadsheet - to create your own custom KPIs that update with the rest.