It would be nice if Evernote would add a count after "Notebooks" ... but in the meantime here is what I use to figure out how close i am to disaster (the app i use is TapeCalc): Pass 0: Set things up so "Notebooks" is displayed in the left column. Pass 1: Count all the primary notebooks including stacks. Pass 2: Open each stack and add the total notebook displayed within the open stack to the total ... then close it and move on to the next stack. ... Pass n: If you have stacks within stacks, you just do Pass 2 again until all stacks are accounted for. So the only question left is how close you are willing to let things get to 250 before disaster strikes.