Artist3D - Modeling Tool app for iPhone and iPad

Artist3D offers entry-level 3D modeling.
Rotate move and scale 3d objects very easily by using your fingers.
Paint directly onto the surfaces of 3d objects.
Sketch an object by just drawing its outline.
3D print your design by sending models to shapeways 3d printing service.
Exchange VRML97 files and Wavefront obj files with other tools.

Easy to learn: Artist3D is a full-featured polygon modeler with less than 30 controls.
Artist3D is optimized for multitouch control.
It works without any text input except for file selection.

Artist3D has an augmented reality mode.

Watch videos on http://www.artist3d.de explaining the workflows.