Yes, both ReviewBot and Grab Your Reviews offer a Free Trial.
ReviewBot is designed for Medium Business and Small Business.
Grab Your Reviews is designed for Large Enterprises, Medium Business and Small Business.
Pricing for ReviewBot Starts at $5/Month whereas for Grab Your Reviews Starts at $23.17/Month when Billed Yearly.
Some top alternatives to ReviewBot includes ReviewBuzz, Trustpilot, Guestmeter, TrueReview, RepCheckup, Reputation Studio, ReviewRev, ReviewsWrangler, Grab Your Reviews and Reeview.
Some top alternatives to Grab Your Reviews includes ReviewBuzz, Reputation Desk, Trustpilot, Critique, Review Showcase, Reputation Studio, ReviewRev, Get Review, Reeview and ReviewGain.