THE GUARDIAN - Apr 12 - There are now ~91M people on dating apps – and most of that is thanks to Tinder that makes 21M matches and processes 1.5B swipes every day. A new generation of app developers, many of them women, are launching female-orientated dating apps where women are the gatekeepers. One of them is Bumble, founded by Tinder co-founder Whitney Wolfe. "Bumble is about establishing equality", she says. "When some men feel rejected, they respond with aggression. So if we eliminate the rejection, what is there to be aggressive about?” Susie Lee is the creator of Siren, an app where a woman’s photos are hidden to men until she chooses to match with them. Siren is expanding globally in the summer. Even more interesting is Wyldfire. The app's initial unique selling point is that only men invited by women could be a part of the app, though it has recently introduced an “election” feature where men can offer themselves up to have their profile vetted by female members. The Grade marks users from A+ to F depending on their popularity, quality of messages and responsiveness.