No sorry, just geospatial (horizontal position on the surface of the Earth).
It should be theoretically possible to re-develop it for other spaces (it's "just" a hexagon tiling), but the H3 team put a lot of work into the details and you'd be taking on a big effort redoing that for a different space.
It should be theoretically possible to re-develop it for other spaces (it's "just" a hexagon tiling), but the H3 team put a lot of work into the details and you'd be taking on a big effort redoing that for a different space.