Formstack vs Interact

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

Formstack

See full pricing history

USD · US · source: www.formstack.com

Plan	Pricing	Charged by	Offer type
Forms — Launch secure forms in minutes and simplify how you collect data	USD 99 monthly · USD 83 / month with annual commitment $83 $99 /month paid annually	Flat · /month paid annually	Standalone · Starting at
Suite — Forms + Documents + Sign Everything you need from first form to final signature	USD 299 monthly · USD 250 / month with annual commitment $250 $299 /month paid annually	Flat · /month paid annually	Bundle · Starting at

Interact

See full pricing history

USD · US · source: www.tryinteract.com

Plan	Pricing	Charged by	Offer type
Free	Free Free$0/mofree foreverGet startedFor individuals getting startedFree plan includes100 completions/month2 quizzes1 userCustom designInteract branding on quizzesLead generationNo integrationsNo branching logicNo analytics	Flat · per month	Standalone · Free

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Formstack

Forms — Launch secure forms in minutes and simplify how you collect data

Highlights Builder users: 1

Included
Highlights Forms: 25

Included
Highlights Submissions per form: 1,000

Included
Highlights Storage: 2GB

Included

Suite — Forms + Documents + Sign Everything you need from first form to final signature

Highlights Builder users: 3

Included
Highlights Forms: 100

Included
Highlights Submissions per form: 5,000

Included
Highlights Storage: 10GB

Included
Highlights Document deliveries per month: 250

Included
Highlights eSignatures: Included

Interact

Free

Plan card 100 completions/month: Included
Plan card 2 quizzes: Included
Plan card 1 user: Included
Plan card Custom design: Included
Plan card Interact branding on quizzes: Included
Plan card Lead generation: Included
Plan card No integrations: Included
Plan card No branching logic: Included
Plan card No analytics: Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Formstack

August 27, 2026 Source
- Forms — Launch secure forms in minutes and simplify how you collect data: USD 99 monthly · USD 83 / month with annual commitment
- Suite — Forms + Documents + Sign Everything you need from first form to final signature: USD 299 monthly · USD 250 / month with annual commitment

Interact

August 27, 2026 Source
- Free: Free