WPForms offers Free Trial, but forms.app does not.
WPForms is designed for Medium Business and Small Business.
forms.app is designed for Large Enterprises, Medium Business and Small Business.
Pricing for WPForms Starts at $39.50/Year whereas for forms.app Starts at $12/Month when Billed Yearly.
Some top alternatives to WPForms includes Formidable Forms, Cognito Forms, Formsite, Typeform, Google Forms, Gravity Forms, MightyForms, weForms, Ninja Forms, Forms, Forms.io by 500apps and FormLink.
Some top alternatives to forms.app includes Cognito Forms, Formsite, Paperform, Typeform, Jotform, 123FormBuilder, stepFORM, Forms, Forms.io by 500apps, FormDesigner, Makeforms and FormLink.