Hello,
Thanks for reaching out!  A pageview count is triggered anytime Buttonizer is called on to load, so a view is tallied anytime a new page with Buttonizer installed is loaded.  The same visitor will trigger a new view each time they go to a new page, so the same visitor can count for several views.  Each time a page is loaded in an admin or dashboard will also trigger a view count, so note that on any given month where you have been working on your buttons a lot you may trigger a handful of page views in your monthly count.
You can see page views by clicking on "Analytics" in the left rail of the Buttonizer dashboard.  The free version will show up to the last 7 days, while upgraded accounts can see the last 30 days.
Hope that helps!