If possible, I tried not to leave a review. Isn't this an Instagram 'clone' course? I guess you don't understand the meaning of clone.. The UI code is the same as the code used in the introductory course, and some of the functional codes are copied and pasted as they were used in the introductory course. Is this a clone course or just a code explanation course?.. I made a mistake of not looking into the features of the course properly, so I was going to just listen, but while listening, what is this.. Even if it's true that the code used in the introductory course for UI code was used as it was in the introductory course, the functional code that was left blank for this course was copied and pasted as it was used in the introductory course, and there was no detailed explanation of why it had to be set up like this when setting up Firebase. If you're going to do this, it would be better to change it to the introductory course 2. Considering the content and time of the course, the price is not cheap at Infraon.. I don't want to recommend it to others.