Yes, both Attributer and HockeyStack offer a Free Trial.
Attributer is designed for Large Enterprises, Medium Business and Small Business.
HockeyStack is designed for Individuals, Medium Business and Small Business.
Pricing for Attributer Starts at $49/Month whereas for HockeyStack Starts at $29/Month when Billed Yearly.
Some top alternatives to Attributer includes Marketing 360, SAS Marketing Automation, Atlas CRM, Attribution, Roivenue, Dreamdata, Adjust, Oracle CX Marketing, Attribuly and Dimensions Attribution.
Some top alternatives to HockeyStack includes Dreamdata, FlatGA, Kindmetrics, Makko, GA-Insights, Qualified, Digital Analytics by Dreamdata, Workvivo, Daily Metrics, SharpDash, Page Speed Leads and 123Metrics.