Yes, both Stacker and Quick Base offer a Free Trial.
Stacker is designed for Large Enterprises, Medium Business and Small Business.
Quick Base is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Stacker Starts at $59/Month when Billed Yearly whereas for Quick Base Starts at $35/user/month when yearly.
Some top alternatives to Stacker includes Quick Base, Bubble, Softools, Airtable, Softr, Logiak, DrapCode, Undaku, OptimumHQ, Glide Pages and Glide.
Some top alternatives to Quick Base includes Smartsheet, Internal, Caspio, Microsoft Power Apps, Flowfactory, Undaku, OptimumHQ, CitizenDeveloper and The m-Power Development Platform.