Yes, both Miro and Twiddla offer a Free Trial.
Miro is designed for Large Enterprises, Medium Business and Small Business.
Twiddla is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Miro Starts at $8/User/Month when Billed Yearly whereas for Twiddla Starts at $14/Month.
Some top alternatives to Miro includes Collaboard, Microsoft Whiteboard, WhiteboardFox, Conceptboard, MURAL, Lucidspark, Whimsical, Board, Zoom Whiteboard and Witeboard.
Some top alternatives to Twiddla includes Collaboard, Microsoft Whiteboard, Miro, Explain Everything, FigJam, Groupboard, Doceri, WhiteboardFox, Remotings, Collabtools, Witeboard and Scribble Together.