Best Server Choice for Single Player Game

Hello,

I’m using Unity for a project I’m working on that’s designed to act as a test for children on an iPad, and collect data to a server. I’m fairly new to anything networked as most of my game design experience has been on the local side, but I’m wondering which would be the best options for something that only needs a singular packet of data to be sent (various primitive types and maybe a string).

Would SQL, JSON, or maybe something built-in like Photon be best to use for a one-way connection from an iPad to a server?

You dont need game server or set up some kind of network,
just create some PHP services that will return you json array of your desired data,
using mysql for database is good i have also made a game like clash of clans using mysql, php & unity www process its really easy.

Second best choice is to use a service called PLAYFAB which is very well maintained and easy to use and implement…it is secured and maintain your player data better then mysql and php

But I will suggest you to go for php and mysql.