What is Fillout?
Online form builder for multi-page forms, quizzes, scheduling and payment forms, with native CRM and database integrations. It is a good fit for teams wanting a flexible form builder with a generous free plan and direct HubSpot, Salesforce or Airtable sync.
Pricing: Free plan (1,000 responses/mo); paid from $15/mo billed annually ($19/mo monthly).
Where ConvertFlow is different
Fillout is a strong general form builder with built-in scheduling and a large free plan, which ConvertFlow does not match. ConvertFlow is built for conversion funnels: quiz funnels, triggered popups, landing pages and embedded forms in one builder, with personalization by quiz answers, plus CRM-data personalization and A/B testing across the funnel on the Pro plan. ConvertFlow AI also drives agentic funnel experimentation across the full funnel, with automated A/B testing for landing pages, popups, quiz funnels and site content.
Which should you choose?
Fillout is the better fit for teams wanting a flexible form builder with a generous free plan and direct HubSpot, Salesforce or Airtable sync. ConvertFlow is the better fit if you want quiz funnels, popups, landing pages and on-site personalization in one builder, synced to HubSpot and other CRM integrations (Salesforce, Klaviyo, Customer.io etc), with ConvertFlow AI running automated A/B tests across the full funnel.
Features and pricing were checked on Fillout's own website in November 2026. ConvertFlow is our product. If anything here is out of date, let us know and we'll correct it.
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