How the number arrives without you chasing it
The trick with a graduation is that the people you most want to count are the hardest to pin down: cousins who travel, friends who are maybe, relatives who say yes on the phone and mean it loosely. A message thread cannot hold all of that, and a paper card never comes back. A shareable graduation page lets each guest tap yes from their phone, and the reply attaches to their name on your list, so the running total is real rather than remembered.
You start free, put the date and the venue on the page, and send one link into the family chat. From there the count builds itself while you decide on trays and chairs, and you upgrade as your guest list grows if you need more of the page. Whichever party you land on, the number is the thing worth settling first โ everything else is a matter of taste.