SketchUp offers Free Trial, but formZ does not.
SketchUp is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
formZ is designed for Freelancers, Medium Business and Small Business.
Pricing for SketchUp Starts at $18/month when monthly whereas for formZ Starts at $439.
Some top alternatives to SketchUp includes Vectary, 3D Slash, SelfCAD, Clara.io, Giraffe, 3ds Max, Archicad, Revit LT and Lumion.
Some top alternatives to formZ includes 3D Slash, SelfCAD, SketchUp, Giraffe, Jig Workshop Pro, 3ds Max, Recap Pro, ZBrush and Modo.