What do you call a family calendar that's perfectly synced across everyone's devices?

What do you call a family calendar that's perfectly synced across everyone's devices?

Punchline

Science fiction.

We've got three phones, two tablets, and a laptop all showing completely different versions of Tuesday. One says soccer practice, another swears it's piano, and mine just shows a question mark and the spinning wheel of doom. Meanwhile, my grandson insists the shared calendar I set up "doesn't get notifications" — which is tech-speak for "I never look at it."

So we do what every modern family does: we text each other "where are you supposed to be?" at 4:47 p.m. and hope for the best.