Form.io vs FormAssembly (2026): which should you pick?

Pick Form.io if

• Fits if your developers need forms inside your own application and its data
• Makes sense if you must host data in your own infrastructure

Look elsewhere if

• Skip it if you want a free plan, because none exists
• Pricey if you only need a few forms: the lowest hosted plan is $300 a month
• Tight if you need several environments, since each needs its own server license
• Watch out: the hosted project may not collect personal or sensitive data
• Not for you if you want a no-code builder without developers

Pick FormAssembly if

• Fits if your forms must write data into Salesforce
• Works for teams in healthcare or finance that need compliance controls

Look elsewhere if

• Skip it if you want to see a price, because every plan is quoted after a demo request
• Not for you if you need a free plan, as none is listed
• Watch out: plans carry yearly allowances, 12,000 responses on Collect and 60,000 on Automate, with extras billed as used
• Watch out: Collect forms carry FormAssembly branding, so check what each plan removes

Form.io

• There is no free plan; the hosted SaaS project is $300 a month after the 30-day trial, and the self-hosted options start higher.
• Self-hosted minimum is one project plus one API server environment, $660 a month; each extra environment needs its own server license.
• The SaaS project must not hold personal or sensitive data, per the pricing page, and lacks some security features.
• Add-ons per month: Reporting UI $660, accessibility $495, multi-tenancy $330, embedded builder $660. Five developer licenses are $2,640 a year.

FormAssembly

• No plan has a published price; every plan is quoted after a demo or trial request.
• Plans carry yearly allowances: Collect 12,000 responses and 600 documents, Automate 60,000 and 3,000.
• Extra responses and documents are billed as used, or bought as add-on packs.
• Collect shows FormAssembly branding on forms and themes.

Form.io

JSON-driven forms

Forms are defined in JSON, rendered by the open-source formio.js library and stored through the platform's API.

Self-hosted containers

The platform ships as Docker containers that run in the customer's own environments and databases.

PDF forms

Optional PDF servers display PDF forms and export submissions to PDF.

Multi-tenancy and embedded builder

Paid add-ons support tenant-separated forms and data, and an embedded form builder inside your own application.

Security options

API Plus adds audit logging, field-level encryption and data separation for compliance needs.

FormAssembly

Forms and data mapping

Build forms quickly and map submitted data into connected systems, with document generation and single-signer e-signature on the entry plan.

Workflows and approvals

The Automate plan adds multi-step workflows with reviewers and approvers, plus multi-party e-signature in sequence or in parallel.

AI assistant and intake agents

Every plan lists the Fai assistant, which builds a process from a description, and Intake Agents that guide respondents in chat or by voice.

Compliance and governance

Enterprise adds collection policies, audit chain of custody and retention controls; the site lists FedRAMP, GDPR, HIPAA, PCI DSS and TX-RAMP pages.

Integrations

Salesforce, Microsoft Dynamics 365, HubSpot, Google Sheets, Stripe and webhooks can be added to any plan as paid connections.

Mobile app

A FormAssembly Mobile app is listed on the App Store and Google Play.

Form.io

• SaaS Enterprise Project$300

  per month, hosted on portal.form.io

  One project with unlimited forms and developers, 1M submissions a month, 25 PDF-first forms and 1,000 PDF downloads. No PII; some security features missing.

• Enterprise Level Project$330

  per month per project; at least one required

  Unlimited forms, resources, developers, form builders and submissions, with a self-hosted developer portal.

• API Server$330

  per month per environment

  One server environment with unlimited API calls and submissions. An API Server or API Plus Server is required for each environment.

• API Plus Server$660

  per month per environment

  Adds audit logging, submission data separation, field-level encryption and container security scanning.

• PDF Server$330

  per month per environment

  Optional. Unlimited PDF submission downloads. The PDF Plus Server is $660 per month and adds uploads and a template designer.

FormAssembly

Pricing could not be confirmed. See formassembly.com.