Hello~ Instructor, I am a student who took the Android app development course in 2018. I was thinking about learning iPhone development as well, and I happened to see your course and took it. ㅎㅎ When I took the Android course before, it was difficult because it was my first time learning it, but after working at the company, I felt that it couldn't be explained any easier... I will also watch the iPhone course. Thank you!