Currently the PDF report summarizes the tasks (their billable) under each A4 page which is quite dominant while the total that gets shown at the end/last page is tucked away in the bottom right corner.
It can be bit misleading if you are sending a report for your work and your client does not scroll past first page (and realizes there are another 4 pages and he goes OMG!!! I thought you so cheap…)
I know it’s probably too early and some polishing will be done during the lifetime of the app, so this is just a suggestion.