A desktop Kanban board app built with Elm and Rust. How do they do it sans Electron?

it uses native WebView (WebKit for Linux/macOS, and MSHTML on Windows)

For more details see here. I’d love to see how this app performs in terms of memory use when compared to an Electron-based version. How big are the wins? Is the trade-off worth it? Sounds like great fodder for blog post…