One important thing to note that isn't mentioned in the article: you have to manually add the porn app's source URL to the AltStore before it'll show up there.

One important thing to note that isn't mentioned in the article: you have to manually add the porn app's source URL to the AltStore before it'll show up there. Because you have to browse to the (adult) porn app website in Safari beforehand to get the link, it isn't any easier to access porn this way than it is by typing "porn" into the search box. Set up parental controls on your children's devices! Apple cannot protect them from the preinstalled Safari app (one of the most popular porn apps in the world) unless you take initiative. You can also block the installation of all apps outside of the App Store using parental controls.