[andi999]

Probably the lesson is most stuff boils down to product market fit. Speaking of product: the app is not available through play store, isn't it?

[tmp65535]

All the major app stores restrict pornographic or sexually explicit content.

But if you Google "porn app", the 4th or 5th search result (SexTechGuide) is a page that features the app, with a review, pros/cons, and the funny icon.