How to setup swift entry point?

Question

iOS

Hello digital workers. I am just starting my journey in Swift, I was recommended to write some kind of case right off the bat after familiarizing myself with the database. So, I'm writing a simple RPG and got this question. At the moment, a two-step process for creating a character and passing the character's stats and name to the home page is written. Question: how to save all this data the next time you enter the application so that you do not have to create everything over again?