It’s not a joke at all, at the very least it is a blatant attempt to mock our values and our poskim. No amount of saying “haha we/they were only kidding” excuses any of that. That doesn’t fly in the grown up world.
I have strong evidence that convinces me the app is no joke though.
Re ZD’s psak halacha- if someone asks you for directions on Shabbos you do not answer, shelo lichazeik oivrei aveira.