Yes, both Miro and StoriesOnBoard offer a Free Trial.
Miro is designed for Large Enterprises, Medium Business and Small Business.
StoriesOnBoard is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Miro Starts at $8/User/Month when Billed Yearly whereas for StoriesOnBoard Starts at $9/user/month when yearly.
Some top alternatives to Miro includes Collaboard, Microsoft Whiteboard, WhiteboardFox, Conceptboard, MURAL, Lucidspark, Whimsical, Board, Zoom Whiteboard and Witeboard.
Some top alternatives to StoriesOnBoard includes Todoist, Aha!, Jira, productboard, Productroad, Next Please, Wrike, Smartsheet, ClickUp, FeatureMap, Height, Featmap and Avion.