The Pivot app functionality is VERY basic. I was surprised to learn that when you are building a pivot table, you can't even add a filter to the pivot. Please include this functionality.
The suggestion I was given is to built the pivot off of a filtered report. But then I would need to create so many different reports (with the same details but just filtered differently) in order to build all the pivots I need to build. That's MORE work for me than our current manual solution before purchasing the pivot app.
Filters are a must!