Yes, both Zoho Flow and Reviewflowz offer a Free Trial.
Zoho Flow is designed for Large Enterprises, Medium Business and Small Business.
Reviewflowz is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Zoho Flow Starts at $10/Month when Billed Yearly whereas for Reviewflowz Starts at $4.99/Month.
Some top alternatives to Zoho Flow includes Zoho One, Zapier, Nintex, Integrify, ProcessMaker, IBM Business Automation Workflow, BPMapp by 500apps, ZapUp by 500apps, Built.io Flow and Cflow.
Some top alternatives to Reviewflowz includes Review Showcase, Revi, FreshReview, TrueReview, AppReviewBot, ReviewsCollect, ReviewRev, Qualified, Grab Your Reviews, Workvivo and IFTTT.