Yes, both SyncSketch and Approval Studio offer a Free Trial.
SyncSketch is designed for Large Enterprises, Medium Business and Small Business.
Approval Studio is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for SyncSketch Starts at $6.80/Month when Billed Yearly whereas for Approval Studio Starts at $3,999/Month when Billed Yearly.
Some top alternatives to SyncSketch includes Ziflow, ProofCafe, QuickReviewer, ReviewStudio, Workgroups DaVinci Proof, Filestage, WebProof, Coment, MediaMarkup and Proofing.
Some top alternatives to Approval Studio includes PageProof, ProofQuick, ProofCafe, QuickReviewer, ReviewStudio, Workgroups DaVinci Proof, Hightail, WebProof, Coment and Proofing.