Using Core data or Realm to store arrays

So I'm working on this truth or dare application, and i so far am not encountering any issues, but I would like to start refactoring my code, I have 6 different arrays according to picked categories from two different view controllers with each view controller having a perform Segue according to a sender's title, if the sender is Truth and the category is kids let's say, then a UILabel would show kidsTruth array through an if statement, now since these arrays are about 20-30 strings long in each and I don't want my application to start slowing down as I add more strings in my array , I would like to know how I can implement core data or realm to store my arrays instead of flooding my view controllers with arrays full of text. If someone can thoroughly explain how I would tackle this i would appreciate it!

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