I'm morbidly curious about the app he hired two developers to create

"The next step was to share this discovery with the world through an app – “a different version of ChatGPT, more of a companion. Users would be talking to Eva.”"

sounds like a "companion" app using his books main character as the personality, and the "conscious" chatgpt model, similar to Replika AI and friends.

I'm more surprised it didn't work — aren't the AI wife apps blowing up?

Should have hired marketing people instead of app developers

There must be horrendous amount of competition. It is not that complicated idea and it is one of the ideas that clearly make sense as use case.

Marriages, maybe.