I want to make a simple turn based 2 player game for an android and IOS. I want the android users to be able to play with the IOS user as well. However I am unsure what I should use. It is similar to tick-tack-toe so only numbers will need to be exchanged from user to user. Can someone please point me into the right direction as to what server or client I should use. And if you could show me a tutorial series that shows me how to use it that would be great! I've googled everywhere!
You can use this service from google which support iOS and Android:
https://developers.google.com/games/services/common/concepts/realtimeMultiplayer