Yes, both Proof and Scaleversion offer a Free Trial.
Proof is designed for Medium Business and Small Business.
Scaleversion is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Proof Starts at $26/Month when Billed Yearly whereas for Scaleversion Starts at $11.60/Month when Billed Yearly.
Some top alternatives to Proof includes and undefined.
Some top alternatives to Scaleversion includes Fomo, Proof, SuperProof, Conversion Plus, Super Social Proof, Sooproof, Social Proofy, Proofly, SocialProof and Acalytica Social Proof.