One thing I like about having React DevTools installed is you can easily see which sites use React because the little icon lights up. It's a surprising amount these days; React is getting so popular.
But when it comes to mobile, React-Native seems the way to go.
<script src="vue.js"></script>
Just drop it as a script on the page.
Ironically, my understanding is that it’s Vue that requires a compiler for even basic component support. If you don’t use webpack or similar tools with Vue, as far as I know, you can’t declare an idiomatic reusable Vue component.
With React, whether you use Babel/JSX/Webpack or not, components are always available. They’re the whole point.
I think it’s fair to say that Vue is initially more familiar to and easier to get started with for folks who are more comfortable with HTML. React is more JS-centric. Even though in the end they render the same DOM elements.
React takes a different approach. It doesn't "pretend" to be HTML by extending it with custom directives. Instead, it forces you to start the journey in JS land. That can be frustrating at first if you're unfamiliar with JS. But the gap between "simple" and "complex" is smaller: you learn the idea of components once, and can apply it with or without a toolchain.
I know at the end of the day, they both still come out as HTML and JS in the browser, but React just feels cleaner. At least to me.