This was also my first thought. The impression I get is that the app is for older men to date younger women.
Even after reading the rest of the text I feel this thought pervading my mind for no sensible reason.
After reading the OKCupid founder’s data book, I am of the belief that any dating app that is designed effectively to make a decent profit (IAPs and the like) is mostly just a platform for older men to date younger women.