Hacker Neus
I figured this might be useful to folks.
It's a simple PHP server that requires a single-table database (It's fairly "agnostic," but all my uses are in MySQL).
I won't publish any of the servers that I've set up for my apps, because someone is bound to write an application that drives my bandwidth into the stratosphere.
I could definitely take it further, but this gives me all I need for my purposes.
Here's an app I wrote, that uses it: https://apps.apple.com/us/app/we-are-never-alone/id650482602...