Yes, both DataHero and Slemma offer a Free Trial.
DataHero is designed for Large Enterprises, Medium Business and Small Business.
Slemma is designed for Medium Business and Small Business.
Pricing for DataHero Starts at $49/Month whereas for Slemma Starts at $89/Month when Billed Yearly.
Some top alternatives to DataHero includes iDashboards, Corporater Business Management Platform, Databox, Klipfolio Dashboard, Tableau, SplashBI, Dundas BI, SAS Business Intelligence, Easy Insight and Tableau Server.
Some top alternatives to Slemma includes Alteryx, iDashboards, DataHero, Databox, DashThis, Klipfolio Dashboard, myDATA3, Easy Insight, AppInsights and Analytics Canvas.