Miro offers Free Trial, but Previewed does not.
Previewed is designed for Individuals, Medium Business and Small Business.
Miro is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Previewed Starts at $20One-Time Payment whereas for Miro Starts at $8/User/Month when Billed Yearly.
Some top alternatives to Previewed includes Miro, NinjaMock, Balsamiq, Wireframe.cc, Mockplus, Claritee, Stage, Zen Wireframe, Lightning Builder and Mockly.
Some top alternatives to Miro includes Collaboard, Microsoft Whiteboard, WhiteboardFox, Conceptboard, MURAL, Lucidspark, Whimsical, Board, Zoom Whiteboard and Witeboard.