3DM viewer suggestions

I use Rhino in Windows but I’ll also ask on the Mac side.

My partner has zero CAD background and needs to view and show my designs using her iPad. Easiest if there is an app that allows her to navigate around a 3DM file but if a better solution is to use another format that’s fine.

What are app suggestions to turn and view a 3DM file or other 3D model on an iPad? Thank you.