Figure out how to make the stepper update the splitNumberLabel. If successful, you should see the number next to the stepper grow when you press on the + side and it should shrink if you press on the - side.
Figure out how to print the number of people to split the bill between when the user taps on the Calculate button.
E.g. Tap on the stepper until the number 12 appears next to it.
Next tap on the Calculate button, 12 gets printed in the console.
SOLUTION
Check out the solution to this challenge step by cloning the project from the link below:
https://github.com/appbrewery/Tipsy-iOS13-Completed/tree/3871f8bd4fb9bdf0458d35a2533b0495d66e64a2