Whatever. He’s nailed the formula, because although Sean won’t release the total number of Tinder downloads since its US launch nine months ago, he will tell you that it’s led to 50 million matches and ten engagements. Apparently. Given that it’s ad-free, it’s unclear how Sean will monetise it, but in the meantime Tinder has become the App Store’s fastest-growing dating app, and it’s currently being rolled out in Britain, Australia, across much of Latin America, Germany and France. Sean says that, in the US at least, there are ‘a lot’ of celebrities on it he can’t name (although he has revealed that the Winklevoss twins are sharking around), along with a few ‘billionaires, a slew of entrepreneurs and a couple of CEOs of very big startups’.