Thanks for the response! Did some more digging and found that

react-instantsearch

should be used for web apps, and

react-instantsearch-core

specifically should be used for react native/mobile per the algolia docs (this was a little hidden as you had to see the upgrade to v7 instructions, but had no need to read that since I'm using it for the first time). This is an important distinction because using

react-instantsearch

in an RN project was giving me lots of errors. The one I was getting using

SearchBox

is:

Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

with just this:

import { InstantSearch, SearchBox } from 'react-instantsearch';

// ...
<InstantSearch ... >
   <SearchBox />
</InstantSearch>

Am now using

useSearchBox

with

react-instantsearch-core

and its working so far, but you do have to implement your own SearchBox component (doesn't seem like there's an out-of-box component for RN). This is all from the React Native section that I actually only found after asking the original question!