Thanks for your feedback! I also think that an app specifically targeted to this purpose could be a potential success and I'm actually quite surprised that nobody has done it yet (as you said, there are a few projects that have some crossing surface but don't target this sector exclusively).
It's a shame that I don't know how to start a project as big as this. I would really like to see this come to fruition because it could potentially be the thing that makes crypto useful for the common user. I admit there are a lot of projects that do tie crypto to actual services, but I believe that sex is the one people want and need instead of it being mere curiosity.
You might create a lot of money with this.
There will always be customers when it comes to that field and some do pay just so to watch or tip others that have a good story with their sex life.
I mean, you will just need funds and a team but do not go using ICO just to create money for yourself. I hope you get this right and somehow be fruitful.