Quote - I'm not sure why this is being marketed as "professional" 3D modelling.  I don't know many professionals doing production work on a smartphone.  I see this as great tool for mockups and prototyping, which could be transferred to a workstation for refinement.  Working seriously on a screen less than 17 inches is not what I'd consider professional, but professionals could use this tool as a way to flesh out designs or concepts on the go.  For this reason, I would hope that the full version supports a robust list of export formats.  Obj is ok, if the format's internal options are exposed in the export dialogue, but ideally I would like to see fbx and Collada.

 

I agree that for most professional modeling tasks, working on a big screen is of course much more efficient, and Spacedraw is thought mainly for prototyping, as you wrote.

But then there actually are passionate and highly talented people who simply do not have access to a workstation for various reasons (I know some by mail) - for them Spacedraw may be of great value since there are no other usable 3d modeling apps for Android, nor for iOS yet.

Collada export is planned, will be added when animation is implemented. Also, the internal format will be exposed, so 3rd party converters can be developed.