FastField offers Free Trial, but Survio does not.
Survio is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
FastField is designed for Individuals, Medium Business and Small Business.
Pricing for Survio Starts at $18.33/Year whereas for FastField Starts at $23/user/month when yearly.
Some top alternatives to Survio includes SurveyMonkey, SmartSurvey, QuestionPro, SurveyMethods, SurveySparrow, Survmetrics, Couchsurvey, Survs, Key Survey Software, SurveyRock, easyfeedback and Cognito Forms.
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.