Neither Blocks nor 3D Slash offers a free trial.
Blocks is designed for Individuals, Medium Business and Small Business.
3D Slash is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of 3D Slash begins at $2/Month, while pricing details for Blocks are unavailable.
Some top alternatives to Blocks includes Vectary, 3D Slash, Clara.io, SketchUp, 3ds Max, Recap Pro, Cinema 4D, formZ, SwiftXR and Rapid Mockup.
Some top alternatives to 3D Slash includes Vectary, CL3VER, SelfCAD, Clara.io, Strata Sculpt 3D, SketchUp, 3ds Max, Blocks and Spline.