Fillout vs. Heyflow:
Funnels that turn paid clicks into customers
Fillout collects data. Heyflow converts traffic. If you're running paid campaigns, you need more than an embedded form. You need conversion-ready landing pages, native ad tracking, and full design control.
Why marketing teams move from Fillout to Heyflow
Fillout is a solid form builder, but forms don't convert paid traffic. There's no landing page capabilities, no conversion blocks like hero sections or testimonials, no server-side tracking, and no A/B testing. Phone validation is US-only and requires a paid add-on. If you're spending on Meta, Google, or TikTok and sending that traffic to a Fillout form, you're leaving conversions on the table.
Funnels, Not Just Forms
Fillout builds forms you embed on a page. Heyflow builds the entire page. Full landing experiences with 40+ conversion blocks: hero sections, testimonials, video backgrounds, calculators, CTAs, accordions, and more. Plus 42,000+ icons, 2,000+ style variables, 1,000+ fonts, and separate desktop and mobile versions to match your brand exactly.
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Tracking That Paid Media Demands
Fillout offers client-side Meta Pixel on its Business plan. Heyflow connects natively with Meta CAPI, TikTok, Google Ads, LinkedIn, Bing, Taboola, and Outbrain, all server-side. Plus native Hotjar, Microsoft Clarity, and Voluum integrations. No paid add-ons, no manual setup.
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Test, Optimize, Repeat
Fillout has no A/B testing. Heyflow lets you split traffic, test variants, and track drop-offs step by step. Know exactly where visitors fall off, which version converts, and what to fix next. Built in, not bolted on.
Try for freeHow Heyflow stacks up against Fillout
Fillout is a great form builder. But if you're running paid campaigns, you need more than an embeddable form. Here's what separates a data collection tool from a conversion platform.
Purpose-built for conversion
Heyflow:
Funnel and landing page builder designed for paid media, lead gen, quizzes, and product discovery.
Fillout:
Form and survey builder designed for data collection and database workflows.
Landing page capabilities
Heyflow:
Full landing pages with 40+ conversion blocks: hero sections, testimonials, video backgrounds, CTAs, accordions, logo bars, and 42,000+ icons.
Fillout:
Form builder only; no landing page elements, no hero sections, no CTAs, no icon library.
Server-side ad tracking
Heyflow:
Native Meta CAPI, TikTok Events API, Google Ads, LinkedIn, and Bing, all server-side.
Fillout:
Client-side Meta Pixel only (Business plan); no server-side CAPI for any platform.
Ad platform integrations
Heyflow:
Native pixels for Meta, TikTok, LinkedIn, Google Ads, Taboola, Outbrain, and Voluum, all code-free.
Fillout:
Meta Pixel and Google Ads only; Google Ads requires paid Conversion Kit add-on; no TikTok, LinkedIn, Taboola, or Outbrain.
Behavioral analytics
Heyflow:
Native Hotjar, Microsoft Clarity, and Matomo integrations.
Fillout:
Possible via custom code on Business+ plans; no native integrations.
A/B testing
Heyflow:
Built-in A/B testing with statistical significance, traffic allocation, and drop-off tracking.
Fillout:
No A/B testing on any plan.
Lead quality & validation
Heyflow:
HLR phone network validation (carrier-level), SMS OTP, email validation, address autocomplete.
Fillout:
Email validation native; SMS OTP via paid add-on (US mobile only); no phone network validation.
TCPA lead compliance
Heyflow:
Native TrustedForm and Jornaya/Verisk integrations.
Fillout:
No TrustedForm or Jornaya support.
Cookie consent banner
Heyflow:
Native editable cookie consent banner plus Openli integration.
Fillout:
No built-in consent banner.
Design control
Heyflow:
2,000+ style variables, 1,000+ Google Fonts (Heyflow-hosted, GDPR-friendly), custom font uploads, custom CSS/JS/HTML.
Fillout:
Theme-level styling; CSS on Pro+; custom JS on Business+ (requires custom domain); Google Fonts via external calls.
Mobile-first experience
Heyflow:
Custom performance framework with >90 PageSpeed scores and separate desktop/mobile versions.
Fillout:
Responsive forms; no separate mobile design; no performance optimization framework.
Conditional logic
Heyflow:
Visual Logic Map for complex branching with AND/OR rules, calculations, and variables.
Fillout:
Conditional logic with AND/OR groups, formula builder, and answer piping.
CRM integrations
Heyflow:
Native HubSpot, Salesforce, Pipedrive, Zoho, HighLevel, and ActiveCampaign.
Fillout:
HubSpot, Salesforce, Pipedrive native; ActiveCampaign, HighLevel, Zoho require Zapier.
HR/recruiting integrations
Heyflow:
Native Personio, Recruitee, and softgarden.
Fillout:
No native HR integrations.
Native autoresponders
Heyflow:
Built-in email and WhatsApp autoresponders with custom SMTP.
Fillout:
Email autoresponders with custom SMTP, Gmail/Outlook send, and delayed sends; no WhatsApp.
Database integrations
Heyflow:
Google Sheets, Airtable (one-way sync).
Fillout:
Deep bidirectional sync with Airtable, Notion, MongoDB, PostgreSQL, and Supabase.
Enterprise compliance
Heyflow:
SOC 2 Type II, ISO 27001 certified, HIPAA compliant with BAA, 100% German servers.
Fillout:
SOC 2 Type II; no ISO 27001; no HIPAA/BAA; EU deployment requires Team+ plan and support request.
Sensitive data handling
Heyflow:
Sensitive Tag auto-deletes specific fields after processing.
Fillout:
Manual deletion only.
Team seats
Heyflow:
Plan-dependent.
Fillout:
Unlimited seats on all plans including Free.
Free plan
Heyflow:
14-day free trial, no credit card required.
Fillout:
1,000 responses/month, unlimited forms and seats.
Customer success
Heyflow:
Dedicated local support and optimization guidance.
Fillout:
Standard support; priority on Business+.
Lukas Pieczonka
Founder & CEO at McMakler
Switching from Fillout to Heyflow gave us a 30% lift in conversion rates from paid campaigns. Funnels simply perform better than forms, and the support team helped us optimize every step.
Frequently asked questions
Is Heyflow just another form builder?
No. Heyflow is a funnel platform built for performance marketers. While form builders like Fillout collect responses, Heyflow helps you convert paid traffic with multi-step funnel experiences, server-side ad tracking, A/B testing, and lead validation. Whether you're capturing leads, guiding shoppers through product quizzes, or driving purchases.
Is Heyflow free?
Heyflow offers a free 14-day trial so you can test all features, no credit card required. Fillout does offer a generous free plan for basic data collection. But if you need server-side tracking, A/B testing, or lead validation, those aren't available in any form builder's free plan.
View pricingIs Heyflow compliant and secure?
Yes. Heyflow is GDPR compliant, SOC 2 Type II certified, HIPAA compliant with BAA available, and ISO 27001 certified. All data is encrypted and stored on EU servers, processed according to the highest industry standards.
Do I need technical skills?
No developers needed. Everything is drag-and-drop with live preview and advanced logic built in. For teams that want to go further, custom CSS, JavaScript, and HTML are available to extend functionality.
Can I connect it to my ad accounts?
Yes. Heyflow integrates natively with Meta, Google, TikTok, LinkedIn, Bing, Taboola, Outbrain, and more. Server-side integrations like Meta CAPI ensure accurate tracking even with ad blockers and iOS privacy restrictions, no workarounds or paid add-ons required.
What about Airtable and Notion?
Fillout has the stronger database integration here. If Airtable or Notion is the center of your workflow and you need bidirectional sync, Fillout is the better choice for that specific use case. Heyflow integrates with Airtable and Google Sheets, but the sync is one-directional.
Start converting more from every paid click.
Join marketing teams using Heyflow to turn paid media into measurable ROI.