The primary goal I've been seeking for a while now (and which so far only flet has reasonably fulfilled) is the ability to dynamically create GUIs. Like I created a REPL app which works similar to the regular Python REPL, but also if the code entered at the prompt returns a control/component, it shows that control with full functionality. No need to compile anything, esp on another device. And it's a standalone app, not a frontend to a server or even a web view.