> People have tried making original OKCupid style apps, and they fail

That's why you need the original founders to make it again. OkCupid was a site made by 140 IQ dudes in Boston for 100+ IQ types. It was not an easy problem. It succeeded because the match % was uncannily accurate. Loss of the site (acquisition and tinderification by Match) was like the sack of Rome.

I too really miss the old OKCupid. I was on it from near its inception (around 2003 I think) until they started requiring phone numbers (2020 I think) and I agree its decline was tragic.

That said, I think the world has changed in ways that would make it difficult to replicate now. For one thing, imagine all the AI bot profiles that would exist. For another, the legal environment has only gotten worse in the sense that entities like Match will try to sue you for infringing on some bogus patent.

Also, let's not forget that the takeover by Match was a deliberate choice: those "140 IQ dudes" chose to sell out their nice product to a big evil company although it was pretty foreseeable they were going to ruin it. Who's to say that wouldn't happen again?

OKCupid, back in the day, was stunningly good. Back in 2011 I spent a huge amount of time filling out my profile, and OKC found me 5 matches with >98%.

I married one of them and 2 of them are still close friends.