I already have a lot of experience with packaging apps with webviews and adding device features like easy login and QR scan. (I know React, but this is my first time with RN.) In addition to using device features, I also had to switch between EXPO and RNCLI because of module selection, I decided to learn senior-level know-how once, and it seems like it was a really good decision. -----Additional---- I am so satisfied that I have already paid for both the first and second part of the instructor's TypeScript lectures at a discount. I plan to do device control toys and navigation toys after taking the lecture, so I will see a lot of them later, but I don't think I will regret it.