https://github.com/josephg/dweb-sched
It's got full native calendar integration - so if you want you can favorite a session and it'll automatically add the session to your calendar in ios. (Or un-favorite to remove). It looks and feels completely native. I'm using taffy for layout - which is a pure native rust implementation of CSS's flexbox & grid layout engine. So layout works the same everywhere, using the same primitives you find in the browser.
The UI framework is still quite experimental though. I'm rewriting the core at the moment. The API won't stay the same for 1.0.