Yes, both Formstack and Harvest offer a Free Trial.
Formstack is designed for Large Enterprises, Medium Business and Small Business.
Harvest is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Formstack Starts at $50/Month when Billed Yearly whereas for Harvest Starts at $10.80/User/Month when Billed Yearly.
Some top alternatives to Formstack includes Cognito Forms, Zoho Forms, Formsite, Typeform, Google Forms, Jotform, 123FormBuilder, FormAssembly, stepFORM, forms.app, Microsoft Forms and Framestr Online Forms.
Some top alternatives to Harvest includes clockodo, Timesheets.com, TrackingTime, Clockify, TimeTrack, Time Track Bill, Timesheet, Hyperlogs, Timet and Time Tracker by eBillity.