Neither Jamform nor Forms.io by 500apps offers a free trial.
Jamform is designed for Medium Business and Small Business.
Forms.io by 500apps is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Jamform Starts at $9/Month whereas for Forms.io by 500apps Starts at $9.99/Month when Billed Yearly.
Some top alternatives to Jamform includes Cognito Forms, Formsite, Typeform, Jotform, Formik, Formcake, Formspree, Forms.io by 500apps, Headlessforms, FormLink, ContactForm and SmartForms.
Some top alternatives to Forms.io by 500apps includes Cognito Forms, Formsite, Typeform, Jotform, 123FormBuilder, 99inbound, WPForms, Forms, EmbedForms, FormDesigner and FormLink.