I hope you enjoyed that challenge and you're now familiar with all of Xcode's tiny buttons in Interface Builder.
I really encourage you to take the opportunity and fully customise the design of your app. Once you're done and you're proud of it, post an image or gif of it in the comments section so myself and other students can congratulate you on your work!
I'm looking forwards to judging the best designs!
Check out what other students have made: