React app is a native app. JS performance is ~the same in UI part - just declare what you want to display and native part will do the rest. It is much much easi

React app is a native app. JS performance is ~the same in UI part - just declare what you want to display and native part will do the rest. It is much much easier to write slow AppKit code than RN one. Actually it is really hard to achieve decent performance with AppKit.