If you are new, I recommend using Playgrounds.

おお、日本の方がいた！！

never mind I got the same result again :(

Hi, I am also participating in the challenge! I believe you have the option to choose from Xcode simulator, iPad playgrounds and Mac playgrounds. However, you do not have the ability to choose what device is going to be used in the Xcode simulator.

does it work on swift playgrounds app?