Yes, both Quick Base and A2Zapps offer a Free Trial.
Quick Base is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
A2Zapps is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Quick Base Starts at $35/user/month when yearly whereas for A2Zapps Starts at $1/Month.
Some top alternatives to Quick Base includes Smartsheet, Internal, Caspio, Microsoft Power Apps, Flowfactory, Undaku, OptimumHQ, CitizenDeveloper and The m-Power Development Platform.
Some top alternatives to A2Zapps includes AppElixir, Nwicode, GitHub, Apphive, Native, 2OS App Builder, AppMaster.io and Codeless.