Nomad Sculpt is fantastic software also for 3D paint and I wish we could export the model to USDZ so would be ready to be used in ARKIT and we could carry a maximum of textures and informations. Besides it would be helpful to fine tune texture in Procreate.
thanks for your amazing Work
It wouldn’t help, Nomad does vertex painting, not texture painting.
USD gets my vote purely for hugely reduced file size compared to OBJ, so fingers crossed it gets added a some point in the future 
YES please , make it possible
You are expected to use glTF, not OBJ.
USDZ is atrocious to integrate, it’s really a pain.
Unfortunately zbrush doesn’t support gltf so obj is my only option to transfer back and forth
There are free online converters that is not a big detour.
But - It would be nice to have a comprehensive standalone cheap IPad converter app for ALL the various file formats.
Convertor is not really a solution, you always lose tons of information.
If you don’t need extra information (textures, vertex paint, hierarchy, skeleton, material, rig, etc), OBJ or STL should be enough.
For ZBrush, OBJ is fine.
iOS can zip files easily if it’s too big.
Please make USDZ export possible on Nomad