Spacedraw is described as 'professional 3D modeling tool for mobile multi-touch devices. View, draw, construct and paint in 3D with intuitive use of multi-touch and motion-sensors' and is an app in the Photos & Graphics category. There are five alternatives to Spacedraw for Android, Android Tablet, iPad, iPhone and Windows. The best alternative is Microsoft 3D Builder, which is free. Other great apps like Spacedraw are SDF 3D (Freemium), 3DC.io (Free), d3D Sculptor (Freemium) and Polydust (Paid).