The app has been hailed as a feminist answer to online dating, in which women are empowered to make the first move if they choose.
It also helps prevent aggressive and demeaning messages that litter the web on accounts like @tindernightmares.
But ironically, Bumble says in allowing men unlimited time to consider messaging, it wasn't an equal playing field.
"I know the whole idea is that it's empowering women, but it also just puts the ball in the guy's court and starts a 'wait and see' game," says New Yorker Lauren Drell, 30.
Is it really possible to be friends with your ex after a breakup?
"The nature of how to handle a breakup has to do with how you experience a relationship," says New York City-based psychoanalyst and psychotherapist Janice Lieberman, Ph D, who specializes in relationship issues.
"Sometimes it's easier not to call, and there are people who will just run away," she admits.