At the end of last year, Justin McLeod, the founder of the dating app Hinge (thanks to which New York City Mayor Zohran Mamdani met his wife, Rama Duwaji), left his role as CEO to create another app called Overtone. He felt that, even though the digital revolution has expanded the possibilities for meeting people and finding a romantic partner like never before, the abundance of choice has left people with fewer guideposts for making decisionsSe…