To learn the total number of potential calls to a routine as coded in the source, use the Static Analysis profiler:
Profile the application and get results.
Select the Routines Data category in the Explorer panel.
Locate the routine in the Report panel and look up the Call Count column.
To learn what methods in your application are potentially called most or least often, sort results by the Call Count column in the descending order and check which methods are on top (most frequently called) and at the bottom (least frequently called).