I have been toying with that idea for years. Game engines are the only truly-cross-platform UIs out there. They're fast, extremely flexible. The two main downs

I have been toying with that idea for years. Game engines are the only truly-cross-platform UIs out there. They're fast, extremely flexible. The two main downsides are that they can be resource-intensive, and that they won't look like system apps. But yeah, make a pivot table and a chart library in Godot, and I'll probably use it.