Several weeks ago Tinkercad killed the popular 3D modeling app, closing new users and announcing a slow death for existing users from the free to the pro accounts. Today's news that Autodesk is saving Tinkercad is even sweeter as it has unlocked all of the pro features so you now have unlimited designs as well as access to the 'superscripts' that take the relatively simple 'drag and drop' assembly of geometry to a greater level of 3d modeling complexity.
The Autodesk team are also planning to continue to develop the 3D modeling app further with more import and export options and it may even find it's way into the already impressive 123D range of apps that are perfect to design for 3D printing with Shapeways.
Mecube is an easy (and addictive) app to 3D design and 3D print direct from your iOS device. The intuitive interface is a simple 'voxel modeler' where you add cubes together to make a 3D form like assembling single blocks of Lego together. You can use the same process to cut away or even 'skew' cubes for some slightly more complex variations. Each voxel can be assembled as a solid color or you can go back and paint each surface, by touching a surface multiple times you increase the saturation of the color, this allows for quite a large variation of colors from such a simple interface.