Search around for information on using FairPlay streaming for doing something like this. That isn't what it is for exactly, but from what I read searching around there may be a creative way to use it to accomplish what you are asking.

Ray Wenderlich has many great tutorials for building games in SpriteKit, Swift, etc. Just one example: https://www.raywenderlich.com/71-spritekit-tutorial-for-beginners Note some are a bit dated, but can get them pointed in the right direction.

What you are trying to do can probably best be accomplished with the built in logging system. These can easily log (print out) the message you give it (along with the source file name, func/method, line number in the source code, etc.). Take a look through the built in logging facilities here, they are VERY helpful: https://developer.apple.com/documentation/os/logging https://developer.apple.com/videos/play/wwdc2023/10226/