Neither Vectary nor Rapid Mockup offers a free trial.
Vectary is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Rapid Mockup is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Vectary Starts at $12/User/Month whereas for Rapid Mockup Starts at $5.90/Month.
Some top alternatives to Vectary includes 3D Slash, SelfCAD, Clara.io, SketchUp, 3ds Max, Blocks, Spline, Rapid Mockup and Concept3D.
Some top alternatives to Rapid Mockup includes Miro, NinjaMock, Balsamiq, Wireframe.cc, Claritee, Mockup Clips, Morflax Things, Mockups by Glorify, Zen Wireframe and Lightning Builder.