Yes, both Harvestr and productboard offer a Free Trial.
Harvestr is designed for Medium Business and Small Business.
productboard is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Harvestr Starts at $49/Month whereas for productboard Starts at $20/User/Month when Billed Yearly.
Some top alternatives to Harvestr includes ProdPad, Jira, productboard, Productroad, ProdCamp, Backlogs, Next Please, Primary, IdeaPlan and Producter.
Some top alternatives to productboard includes Aha!, Roadmunk, ProdPad, ProductPlan, Jira, Productroad, ProductFlare, Next Please, airfocus and IdeaPlan.