Voxel Max for IOS Ipad
A very interesting and efficient Voxel sculpting program. You can use different materials like metal and emissive materials.
Objects and scenes can be exported to OBJ, FBX, Qubicle, Magica Voxels Vox and more.
Objects can be up to 256 x 256 x 256 and a whole scene with objects can be much bigger.
https://voxelmax.com/
https://voxelmax.com/r/install/appstore