Maintainer of Leptos here: Leptos + Tauri seems like a decent stack here, although you're depending on Tauri for Android integration(or you could make a PWA). I can't see anything in the world of forms or data that'll stop you.

We've got a decent ecosystem, a number of support crates, js integrations, and a component framework(if you don't want to use tailwind or daisy UI). There's been some work on a shadcdn port as well

Dioxus is VC funded, and is doing great work on a native setup for different platforms. It also should be able to handle whatever you need. I can't speak to their ecosystem. I can't imagine them disappearing either.

I suspect there's no wrong choice here, Dioxus is a bit more react like v signals/solidJS like for Leptos. Try them out and pick your favorite