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Comparison

SurveyNinja vs Formstack: a free plan where Formstack starts at $99 a month

Formstack has no free plan. Forms costs $99 a month ($83/mo billed yearly) for 1 user and 25 forms, and each form stores 1,000 submissions before new ones go to your inbox. SurveyNinja starts free with 100 responses a month, and 1,000 cost $10.50/mo. From Basic you also get click tests with heatmaps, pairwise comparison and SPSS export, and A/B tests are on every plan.

Start free See the comparison

Free plan with 100 responses a month and 14 days of Premium. No card required.

Prices and features checked on October 15, 2026.

SurveyNinja Formstack
1,000 responses a month $10.50/mo $83/mo
10,000 responses a month $48.30/mo $83/mo
REST API From Basic Enterprise only
Single sign-on (SSO) From Premium Enterprise only

Prices per month, billed yearly, in USD.

Which one is right for you

Choose Formstack if

  • You take payments, product orders or eSignatures in your forms, or need forms native to Salesforce.
  • You need HIPAA forms on Formstack for Healthcare or documents generated from submissions.

Choose SurveyNinja if

  • You want to start free: the Free plan includes 100 responses a month and 3 surveys. Formstack has no free plan and starts at $83/mo billed yearly, $99 monthly.
  • Your responses add up: 1,000 a month cost $10.50/mo and 10,000 cost $48.30/mo, billed yearly, while Formstack's Forms plan stores 1,000 submissions per form.
  • You test designs and wording: click tests with heatmaps, pairwise comparison, map questions and A/B tests of question wording, none of which Formstack documents.
  • You need answers you can present: reports you can share by link, SPSS export from Basic and an AI report on open answers on Premium.
  • Your team needs the API and SSO without an Enterprise deal: REST API from Basic at $10.50/mo, SSO via OIDC on Premium at $48.30/mo.
Start free

What you pay for the same number of responses

The cheapest plan of SurveyNinja and Formstack that covers your monthly responses.

Responses per month SurveyNinja Formstack
100 $0 Free $83/mo Forms, billed yearly or $99/mo billed monthly 1 user, 25 forms, 1,000 stored submissions per form
1,000 $10.50/mo Basic, billed yearly or $15/mo billed monthly $83/mo Forms, billed yearly or $99/mo billed monthly 1 user, 25 forms, 1,000 stored submissions per form
5,000 $25.90/mo Standard, billed yearly or $37/mo billed monthly $83/mo Forms, billed yearly or $99/mo billed monthly 1 user, 25 forms, 1,000 stored submissions per form
10,000 $48.30/mo Premium, billed yearly or $69/mo billed monthly $83/mo Forms, billed yearly or $99/mo billed monthly 1 user, 25 forms, 1,000 stored submissions per form
20,000 $48.30/mo Premium, billed yearly or $69/mo billed monthly $83/mo Forms, billed yearly or $99/mo billed monthly 1 user, 25 forms, 1,000 stored submissions per form

Prices per month in USD with yearly billing; prices of Formstack are taken from its pricing page on October 15, 2026. Formstack has no monthly response limit: it limits stored submissions per form (1,000 on Forms, 5,000 on Suite) and emails you the ones over the cap. The table shows the Forms plan for every tier, with 1 user. All plans and limits

Start free

Free plan, no card required

Where SurveyNinja goes further than Formstack

Features that matter for research and analysis, with the plan they are on.

A free plan to start

The Free plan includes 100 responses a month, 3 surveys and NPS questions, plus 14 days of Premium without a card. Formstack has no free plan: Forms costs $99 a month, or $83/mo billed yearly.

Research questions in the builder

Click tests with heatmaps, area selection on images and pairwise comparison from Basic, map questions from Standard. Formstack's field list has matrix and rating fields, but none of these.

SPSS export and an AI report

Download responses as an SPSS .sav file from Basic and get an AI report of themes, sentiment and quotes on Premium. Formstack exports submissions as CSV, Excel, RTF or PDF.

API without a sales call

REST API from Basic at $10.50/mo and SSO via OIDC on Premium. On Formstack, API access goes through its sales team and SAML SSO is Enterprise only.

Edit surveys on your phone or your laptop

The whole builder works on a phone: questions, logic, design, publishing and responses. Fix a question on the way to a meeting, check new answers from the couch and finish the survey on your laptop.

  • Every section and setting fits a small screen
  • Logic, design and publishing, not a cut-down view
  • Pick up on your laptop right where you left off
The SurveyNinja survey builder in a browser
Survey settings in SurveyNinja on a phone

Research and UX tools in one survey builder

Test designs, rank ideas and ask visitors on your website from the same survey builder.

Click test with heatmap

Upload a mockup or a screenshot and ask where people would click. The report shows a heatmap of all clicks.

From Basic Not documented by Formstack

Pairwise comparison

Respondents choose between two options at a time; the adaptive mode drops weak options early. The report ranks items with a win matrix.

From Basic Not documented by Formstack

A/B test of question wording

Show different versions of a question to different respondents and compare completion and answers by version, with a significance test.

All plans, including Free Not documented by Formstack

Map question

Respondents drop pins on a map: where they live, shop or travel. See the answers as a map and a list of places.

From Standard Not documented by Formstack

Feature-by-feature comparison

Each cell shows whether the feature exists and the plan it starts on.

Feature SurveyNinja Formstack
Pricing and limits
Responses on the free plan 100 responses a month No free plan; a 14-day trial
Cheapest paid plan Basic: $10.50/mo billed yearly ($15 monthly), 1,000 responses a month Forms: $83/mo billed yearly or $99 monthly; 1 user, 25 forms, 1,000 stored submissions per form
Team seats included 1 on Free, 1 on Basic, 3 on Standard, 5 on Premium; more can be added 1 on Forms, 3 on Suite; more can be added
Free trial of paid features 14 days of Premium, no card required 14 days of Forms, no card required
Building surveys
Create a survey with AI from a description Yes, All plans, including Free Survey or quiz from a text prompt; beta Yes AI Form Creation; logic and calculations are added by hand
Question types 28, plus 6 content blocks; NPS on Free Form fields: text, choice, matrix, rating, file, signature, payment; no ranking or NPS field in the docs
Branching logic Yes, From Basic Yes, From Forms
Calculations and formulas No Yes, From Forms
Payments inside the form No Yes, From Forms Credit card and product fields with Stripe, PayPal and other gateways
Research and UX tools
Click test with heatmap Yes, From Basic Heatmap of clicks on an image; hotspot selection with drawn areas Not documented by Formstack (October 15, 2026)
Pairwise comparison Yes, From Basic Every pair or adaptive mode with fewer pairs; win matrix in the report Not documented by Formstack (October 15, 2026)
Map question Yes, From Standard Respondents drop pins; the report shows a map and a list of places Not documented by Formstack (October 15, 2026)
A/B test of question wording Yes, All plans, including Free Up to 100 versions of a question or block, even split, significance test in the report Not documented by Formstack (October 15, 2026)
Other research question types Yes, From Basic Semantic differential, 3D matrix, constant sum Partly Matrix (Likert) and rating fields; no ranking or constant sum in the docs
Collecting responses
Link, QR code and website embed Yes, All plans, including Free Widget, pop-up, iframe or button Yes, From Forms
Your own domain Yes, From Premium Your own subdomain from Basic Partly yourcompany.formstack.com subdomain
Remove the service's branding Yes, From Standard Yes, From Forms Turn off the Powered by Formstack badge
Close by date or number of responses Yes, From Standard Yes, From Forms
Incomplete responses Yes, From Premium Saved after every answered question Yes Conversion Kit add-on at extra cost
Respondents can continue later Yes, All plans, including Free In the same browser Yes, From Forms Link by email, valid for 30 days
Analysis and export
Export of responses Yes, From Basic CSV, Excel, PDF, Word Yes, From Forms CSV, Excel, RTF and PDF
SPSS export (.sav) Yes, From Basic Exports are CSV, Excel, RTF or PDF; no SPSS format in the docs (October 15, 2026)
Integrations
Google Sheets Yes, From Standard Yes, From Forms
Webhooks Yes, From Standard Yes, From Forms
REST API Yes, From Basic Yes, Enterprise only Through Formstack's sales team
Built-in Slack, HubSpot, Salesforce apps No Through webhooks and the API Yes, From Forms Salesforce, HubSpot, Stripe, PayPal and 300+ more
MCP server for AI assistants Yes, From Premium Claude, ChatGPT and other assistants work with your surveys and responses Not documented by Formstack (October 15, 2026)
Team and security
Single sign-on (SSO) Yes, From Premium OpenID Connect Yes, Enterprise only SAML
Two-factor authentication Yes, All plans, including Free Yes, From Forms Required for new accounts
HIPAA compliance No Yes, Formstack for Healthcare only Separate healthcare plan
Sources: Formstack data checked on October 15, 2026 on its own website

SurveyNinja features checked on October 15, 2026; plans and limits: pricing page

Start free

Free plan, no card required

How to switch from Formstack

1

Create a free account

Sign up in a minute. The Free plan needs no card, and you get 14 days of Premium.

2

Rebuild your survey

Start from a template or describe the survey to the AI generator, then set up logic (Basic and higher). There is no direct import from Formstack.

3

Bring past responses

Export submissions from Formstack as CSV or Excel, upload the file to SurveyNinja on a paid plan and match the columns to your questions. Then share the new link.

Already paying for Formstack?

Send us a screenshot of your payment and we'll give you a free month of our top plan.

Contact us Step-by-step guide to switching

Frequently asked questions

Didn't find your answer? Write to [email protected] or use the contact page, and we'll help you move your surveys.

Is SurveyNinja cheaper than Formstack?

Yes. Formstack has no free plan: Forms costs $83/mo billed yearly or $99 monthly for 1 user and 25 forms. On SurveyNinja, 100 responses a month are free, 1,000 cost $10.50/mo and 10,000 cost $48.30/mo, billed yearly. Prices checked on October 15, 2026.

What does Formstack have that SurveyNinja doesn't?

Payments and product orders inside forms, calculated fields, document generation and eSignatures in Suite, forms native to Salesforce, and HIPAA on the Formstack for Healthcare plan. SurveyNinja is built for surveys and research: click tests, pairwise comparison, A/B tests, SPSS export and reports you can share by link.

Can I move my Formstack forms to SurveyNinja?

Rebuild the survey from a template or with the AI generator; there is no one-click import from Formstack. Then upload past submissions from a CSV or Excel export on a paid plan, up to 20 MB and 10,000 rows per file. Uploaded responses don't count toward your monthly limit.

How does Formstack count submissions?

Per form, not per month. The Forms plan stores up to 1,000 submissions on each form; later ones are emailed to you instead of stored until you delete older ones or upgrade. SurveyNinja counts responses per month: 1,000 on Basic, 5,000 on Standard and 20,000 on Premium.

Is there a free plan or a free trial?

Both. SurveyNinja's Free plan includes 100 responses a month and 3 surveys of up to 10 questions, and every new account gets 14 days of Premium without a card. Formstack offers a 14-day trial of Forms without a card and no free plan after it.

Can I run click tests and A/B tests?

Yes. Click tests with heatmaps are on Basic and higher; A/B tests of a question or block are on every plan. Formstack's help center and field list describe neither.

Is SurveyNinja available in Spanish and Portuguese?

Yes. The website, the help center and the survey screens your respondents see are available in English, Spanish and Portuguese.

Try SurveyNinja for free

Free plan with 100 responses a month and 14 days of Premium after sign-up. No card required.

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