Either that map is wrong, or the US doesn’t understand how the EU works.

I have to add that it shouldn’t matter much though. If anyone is around you, which would be the main use case, it provides you with a QR code that they can scan and view your website.

On my non-jailbroken phone it doesn’t. The default port is 8888 and you can change it, but it doesn’t start if you specify 80. I don’t know if jailbreaking allows that.

I just found ServeIt on fdroid. I tried it with a simple html website and it works on my phone. It does exactly what you ask.