Yes, both Mopinion and FastField offer a Free Trial.
Mopinion is designed for Large Enterprises, Medium Business and Small Business.
FastField is designed for Individuals, Medium Business and Small Business.
Pricing for Mopinion Starts at $229/Month whereas for FastField Starts at $23/user/month when yearly.
Some top alternatives to Mopinion includes SurveyMonkey, QuestionPro, SurveySparrow, easyfeedback, ngSurvey, Cognito Forms, Liveform, UserFace, Freddy Feedback, Feedbackery and Usabilla.
Some top alternatives to FastField includes Cognito Forms, Formsite, Typeform, MightyForms, 123FormBuilder, stepFORM, Microsoft Forms, GoCanvas, Jotform Mobile Forms, Forms.io by 500apps, FormLink and Formee.