Fillout vs Formstack Forms

Compared on	Fillout Free plan · from $15/mo VisitRemove	Formstack Forms Free trial · from $83/mo VisitRemove
What it is	Form builder with unlimited seats on every plan, AI form creation, payments and 1,000 free responses a month	No-code business form builder with prefill, approval workflows, HIPAA options and Salesforce-native forms
Free plan	Unlimited forms and seats, 1,000 responses a month, conditional logic, payments, scheduling, PDF generation, unlimited file uploads (20 MB max file size), Fillout Workflows, most integrations, REST API; Fillout branding badge	No
Cheapest paid plan	$15/mo billed annually (Starter)Fillout pricing	$83/mo billed annually (Forms)Formstack Forms pricing
What it covers	Flat fee with unlimited seats; 2,000 responses a month; $180 billed annually ($228 a year on monthly billing).	1 builder user, 25 forms, 1,000 submissions per form, 2 GB storage; more users, add-on features and submissions can be added.
Free trial	None stated	14-day free trial of Forms, no credit card required
Platforms	Web, API	Web, API
Integrations (vendor's figure)	50+ native integrations, including Airtable, Google Sheets, Notion, HubSpot, Mailchimp and webhooks	300+ integrations, including Salesforce, HubSpot, Airtable, Stripe and PayPal
Open source	No	No
Good for	Teams that want many editors without per-seat fees Forms that send data to Airtable or Notion Order and booking forms that take payments and schedule meetings	Healthcare, education and financial services teams that need compliance options Salesforce teams that want forms native to Salesforce Approval workflows that route submitted data to the right people
Watch out for	The free plan allows 1,000 responses a month and shows a Fillout badge Custom domains, form analytics, drop-off rates and partial submissions need Business The Salesforce integration needs Team or Enterprise	No free plan; only a 14-day trial of Forms The Forms plan includes 1 builder user, 25 forms and 1,000 submissions per form HIPAA compliance is an add-on; SSO, API access and custom SLAs are listed under Enterprise
Made by	Restly, Inc.	Intellistack, LLC

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

Every tool in form builders and survey tools is on its category page, with the written head-to-heads on Compare.