For those of you looking for a new 3D design tool for the iPad, a company called MediaUtopia has just put one out called Sage. Sage allows users to intuitively design and edit 3D models via the touchscreen interface of the iPad. Once a model is created to a user's liking they have the option to have it 3D printed for a fee via Sage's partnership with iMaterialise. More details on this app can be found here: http://3dprint.com/19979/sage-3d-modeling-ios-app/

Let us know if you have had any models printed using Sage. Feel free to post some pictures in this thread. Below are some screenshots from the app: