I wish there was a screenshot of a demo app. How do you market a UI toolkit without any screenshots of what I can do? I'm not going to build a demo project to see what the UI looks like.
I wanted to check if I could build it without any hiccup. It was simple enough. All you need to do it navigate to the example folder and use 'gradle run', assuming you have java and gradle installed on your system.
I guess, for Alpha stage they are not targeting wide audience but mostly people that are familiar with Compose (or wanted to try it).
In most cases you can just copy-paste your Android UI layer or make it cross-platform (like in this code-viewer example https://github.com/JetBrains/compose-jb/tree/master/examples...)