Whimsical offers Free Trial, but Fresco does not.
Fresco is designed for Large Enterprises, Medium Business and Small Business.
Whimsical is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for Fresco Starts at $25/User/Month whereas for Whimsical Starts at $10/User/Month when Billed Yearly.
Some top alternatives to Fresco includes ClickUp, Collaboard, Miro, Conceptboard, MURAL, Whimsical, Remotings, Collabtools, Jamboard, Witeboard and Scribble Together.
Some top alternatives to Whimsical includes Miro, NinjaMock, Axure RP, Wireframe.cc, Claritee, Stage, SmartDraw, Zen Wireframe, Collabtools and Witeboard.