BlockSurvey vs OpnForm

Build powerful forms, surveys and quizzes with AI in minutes

Build forms, surveys and quizzes in seconds — with unlimited free responses

Describe your form, let AI build it

Better interactive quizzes and lead capture polls, but less focused on secure research surveys and data privacy.

Free AI form builder for humans and AI agents

SpecialistTurn static forms into adaptive AI conversations with structured output

SpecialistAI-moderated voice and video interviews that scale survey research to thousands of people at once

Build high-converting AI forms, surveys, and quizzes in seconds

SpecialistConversational AI forms that ask and answer questions

AI form builder that turns plain-language prompts into high-converting conversational forms

Free / Open-sourceLow-code forms and workflow automation with AI-assisted form building

Describe your form in plain language and share a conversational version instantly