Zero," she tells me when we meet at a hotel in London's Covent Garden."That's where my idea for Bumble came from – I wanted to start a network that encouraged positive online behaviour versus bullying, exclusion and all that nasty stuff – I know, I've lived through it."Wolfe is referring to the tidal wave of trolling that occurred after she left Tinder.She was, she tells me, called "the ugliest, meanest, darkest things I've ever read on a public messaging service.I cried for two days."The scary part is that it's human behaviour.
Determined to improve women's experiences online, she launched Bumble – the first dating app that lets women call the shots.
It works much like Tinder (swipe right on a picture if you're interested, left if you're not) but once a match has been established between two people, only the woman can initiate conversation.
Part of what makes it such an attractive proposition is Wolfe herself.
Her "girl power" vibe, enthusiasm and work ethic have attracted a glossy team of accomplished women, as well as users in their droves.
Since its launch at the end of 2014, Bumble has attracted 3.5 million of them – and is currently accumulating new users at a rate of 25,000 a day.
Wolfe believes this success is down to online accountability.
The idea for Bumble came from her desire to create a safe space for people – women in particular – to communicate online.
Romance was what she knew best and so the concept evolved into a dating app – one that she insists has "kindness" at its heart."There's no online accountability in digital anything.
Couples who connected over the internet would laugh nervously and mutter something about "meeting in a bar". Today, it accounts for around one in every five new relationships and one in six marriages.