Sixty-one percent of users are male, 39 percent are women, and while the app is targeted toward women, Li points to this as proof that there are men who like "all different body types." While impressive, considering the app launched in October 2015, the user base still isn't huge.Tinder reported 50 million users with 12 million users joining every day as of 2014, and Ok Cupid reported having 12 million users in 2014.We asked three relationship experts to weigh in on the rule - and their responses were surprising.Relationship expert Susan Winter said, “I find it amusing that there’s an equation for the ‘optimal’ age gap in love.This is a great idea, because it's easy for us to "like" people, but starting a conversation, now that's scary.there are over 25,000 users with 2,000 new signups every day.Ever heard of the rule that men should date women who are half their age plus seven?Some celebrities - think Leonardo Di Caprio - take this to extremes with a roster of 20-something models regularly appearing on their arm, but do you know where the saying comes from?
As for why she thinks the equation has endured for so long, Winter said, “There's no logical reason for this to be a ‘rule.’ Nor does this mathematical equation determine the 'optimal age gap.'” “However, you might note that the gap is larger than one would imagine.Historically, a woman was to choose a man the same age, or five to 15 years older.Mid-century, the reason for the elevated age gap would've been economic. Their husband was their access to social standing and economic stability.It turns out to be relatively well established, dating back more than 100 years to a book by Max O’Rell written in 1901, and the 1951 play The Moon is Blue.But does it stand up to scrutiny, or is it just a baseless rule perpetuated by men who want to justify dating younger, and less mature, women?