These days products are made with an eye towards user comfort. These design requirements necessitate a higher level of 3D modeling than ever before. For higher level of 3D modelling, parametric modeling is not enough.
Freeform modelling is mostly used 3D models of complex curvatures, such as humanoid figures, automotive car body pieces or anything organic/animalistic in form. While all of these apply as examples, there are many other forms that can utilize freeform capabilities. Some of the example where Freeform modelling is grwt help are dinnerware, eyewear, gaming controllers, or even the handle grips on a push mower etc etc. Autodesk Inventor 2015 introduced the freeform modeling toolset to the user base and now Autodesk Inventor 2016 enhances that toolset and streamlines the editing process.