Re: Ada/GNAT/AWS-friendly web hosting

Runs on Android/IOS.

Yes v22.Gui/Gnoga is responsive. Tested with 5" smartphones as old as Nexus 5 (with a browser more recent than the stock one to handle websockets). Also tested on 43” 4K ;)
On some iOS devices, the menu bar is slightly offset. I didn't look too hard. It's a Safari problem. It works fine with Firefox and Chrome.

Does that require an internet web server?

Not necessarily. v22.Gui/Gnoga supports itself X509 TLS https certificates (tested). However, for various reasons (such as the possibility of having several web applications on the same instance and on the same 80/443 input port), in production, I've always chosen to have a Nginx proxy on the front end, which is also more flexible and handle automatic switching from http/80 to https/443.
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Stéphane Rivière
Ile d'Oléron - France