That is a basic xcode project that analysis an text sentence with three possible labels to result: neutral, positive and negative. The fisrt label on screen its the answer by an natural language processing model (NLP) by Apple, and the second label its the aswer by a model created by me.
Apple Developer Academy - UFPE/Recife
@tombaranowicz for tutorial.
If you want a see how create a model with createML and playground: