Fillout vs Formstack
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
The short answer
Editorial assessmentFormstack compared with Fillout
Fillout is far cheaper, more modern to build in, and treats submissions as a database with views and workflow. Formstack brings document generation, bundled e-signature, approval routing, and native Salesforce operation that Fillout does not attempt. Small teams building internal processes should try Fillout first; organizations whose forms have to produce signed documents and satisfy a compliance reviewer should look at Formstack.
Choose Fillout if
Startups and small operations teams that want a form to actually do something: route to an owner, write into Airtable or Notion, generate a document, book a meeting. Especially strong for teams of five to fifty, since seats are unlimited on every plan and only the response count is billed.
Choose Formstack if
Operations, HR, finance, and compliance teams at small and mid-sized organizations that need many moderate-volume forms feeding approvals, generated documents, and signatures, and especially Salesforce-centred businesses that want forms built natively inside the org.
Side by side
13 attributes| Attribute | Fillout | Formstack |
|---|---|---|
| Category | Forms | Forms |
| Starting price | $15/mo (Starter, billed monthly; $180/yr annually) (free plan available) | $83 per month billed annually ($996 a year) for the Forms plan (14 days trial) |
| Pricing model | Response-metered subscription across five tiers (Free, Starter, Pro, Business, Enterprise) with unlimited seats and unlimited forms on every plan; annual billing saves roughly 20 percent. | Per-account annual or monthly subscription with submissions metered per form rather than per account, a fixed number of builder users, and a pooled storage allowance. Compliance features are add-ons. |
| Free plan | 1,000 responses per month with unlimited forms and unlimited seats, including multi-page forms, embedding, conditional logic, calculations, file uploads, pre-fill, payment collection, and workflows. | No |
| Free trial | No time-limited trial needed; the free plan is permanent at 1,000 responses per month | 14 days, no credit card required |
| Best for | Startups and small operations teams that want a form to actually do something: route to an owner, write into Airtable or Notion, generate a document, book a meeting. Especially strong for teams of five to fifty, since seats are unlimited on every plan and only the response count is billed. | Operations, HR, finance, and compliance teams at small and mid-sized organizations that need many moderate-volume forms feeding approvals, generated documents, and signatures, and especially Salesforce-centred businesses that want forms built natively inside the org. |
| Setup time | A basic form is a same-hour job. A routed workflow that writes into Airtable, generates a PDF, and books a meeting is realistically a half day to a day of configuration and testing. | A single form takes under an hour. A full Suite workflow with approval routing, a merged document template, and a signature step is a multi-day project, and the Salesforce-native edition should be scoped as a proper implementation rather than an afternoon. |
| Learning curve | Low for form building, moderate for workflows. The concepts that take longest to internalize are pre-fill versus pre-fetch and how login forms scope a respondent to their own record. | Moderate. The form builder is straightforward, but document templating and approval routing require thinking through the process before configuring it, and the Salesforce edition assumes someone who understands the org's object model. |
| Platforms | Web app, Embeds (popup, slider, side tab, full screen), Hosted links and QR codes, Custom domains (Business and up) | Web app, Hosted forms and embeds, Salesforce-native application, Experience Cloud components |
| Compliance | SOC 2 Type II, 256-bit AES encryption at rest, CAPTCHA and spam protection on public forms | HIPAA available as a purchasable add-on, PCI-oriented payment handling via processor integrations, GDPR data processing terms, Salesforce Shield compatibility in the Salesforce edition |
| Founded | 2022 | 2006 |
| Headquarters | United States (operating as Restly, Inc.); public trackers list Chicago, Illinois | Fishers, Indiana, United States |
| Ownership | Venture-backed (angel-led seed) | Privately held, growth-equity backed by Silversmith Capital Partners and PSG; parent entity rebranded to Intellistack in 2025 |
Strengths and limitations
Fillout
Strengths
- Workflow and routing depth well beyond a normal form builder: post-submission automation, record updates, PDF generation, and scheduling in one flow.
- Unlimited seats and unlimited forms on every plan including free, which makes it the cheapest option in the category for teams with many form owners.
- Login forms and pre-fetch let respondents authenticate and edit their own submissions, a capability most rivals in this price band simply do not have.
- SOC 2 Type II and published encryption details make it the easiest of these five to get through a vendor security review.
Limitations
- Responses are metered on every tier below Business, which is a real cost disadvantage against Tally and Youform for public, high-volume forms.
- Form analytics and partial submissions are locked to the 75-dollar Business tier, which feels late given both are table stakes elsewhere.
- No in-app or behavior-triggered survey targeting; Fillout collects, it does not run product research inside your application.
- Cloud-only with no self-hosting or open-source option, so data-sovereignty-driven buyers have to look at Formbricks instead.
Formstack
Strengths
- Per-form submission metering suits organizations with many moderate-volume forms far better than the account-wide meters used by the rest of the category.
- Forms, document generation, e-signature, and approval routing in one subscription replaces three or four separate vendors.
- Unlimited e-signatures with no per-envelope fee on the Suite plan, which is a direct saving against per-document signature pricing.
- The deepest Salesforce integration in this category: native forms inside the org, dynamic prefill, progressive data capture, Experience Cloud, and Shield compatibility.
Limitations
- No free plan of any kind, only a 14-day trial, in a category where several credible competitors give away unlimited responses.
- The entry plan includes a single builder user, so any team collaboration means paying for extra seats or moving to Suite.
- API access is presented as an Enterprise feature rather than being included on paid self-serve plans.
- The per-form cap is punishing for a single high-traffic form, which is the most common marketing use case.
Pricing compared
Fillout
Response-metered subscription across five tiers (Free, Starter, Pro, Business, Enterprise) with unlimited seats and unlimited forms on every plan; annual billing saves roughly 20 percent.
- Free$0
- Starter$15
- Pro$40
- Business$75
- EnterpriseCustom
Fillout is priced for teams, not individuals. Because seats are unlimited on every tier, a twenty-person company collecting 4,000 responses a month pays 40 dollars, which no per-seat competitor comes close to matching, and Paperform would charge 99 dollars plus per-user fees for a comparable setup. The weakness is the opposite case: a solo founder whose single form draws 8,000 responses jumps from 40 dollars to 75 while Tally and Youform stay at zero. The Business tier is also where the value judgment gets awkward, because analytics and partial submissions being gated there means the jump from Pro to Business is often about features rather than volume. Buy Fillout for the workflows, the integrations, and the SOC 2 report; do not buy it to save money on a simple form.
Formstack
Per-account annual or monthly subscription with submissions metered per form rather than per account, a fixed number of builder users, and a pooled storage allowance. Compliance features are add-ons.
- Forms$83
- Suite$250
- Salesforce SolutionsCustom
- EnterpriseCustom
Formstack is poor value as a form builder and reasonable value as a small workflow platform. Paying $996 a year for 25 forms and one builder user makes no sense next to Jotform's $468 Silver tier or Tally's free plan if all you need is capture. It starts to make sense at the Suite level, where $3,000 a year buys forms, unlimited e-signature, and automated document generation that would otherwise be a form subscription plus a signature vendor plus a merge tool. The per-form meter is a real advantage for organizations with a wide, shallow portfolio of forms and a real penalty for anyone with one popular form. Salesforce-native operation is the strongest single reason to pay the premium, and if you are not a Salesforce shop it is worth asking honestly whether you are buying the thing that justifies the price.
Editorial verdict on each
Fillout
MomentumFillout is the most capable form platform in this group and the one that most deserves to be called a platform. Workflows, native database integrations, login forms, PDF generation, and scheduling combine into something closer to a lightweight operations tool than a questionnaire builder, and the unlimited-seat pricing makes it genuinely cheap for a team where many people own forms. Two things should give buyers pause: the response meter, which is a straight loss against Tally and Youform for public high-volume forms, and the decision to hold analytics and partial submissions until the 75-dollar tier. Buy it for the workflows and the SOC 2 report, not to save money on a contact form.
Read the full Fillout profileFormstack
Formstack is not competing for the buyer who wants a nice form, and it prices accordingly. What it sells is the whole chain from capture to approval to generated document to signature, with the strongest Salesforce integration in the category and a per-form submission model that fits an operations portfolio far better than the account-wide meters everyone else uses. If you are a Salesforce shop, or you are currently paying separately for a form tool, a merge tool, and a per-envelope signature vendor, the Suite at $3,000 a year is a rational consolidation. If you just need forms with logic and payments, you are looking at one of the most expensive entry prices in this market for something Jotform or Cognito Forms does for a third of the money, and you should also weigh the 2023 layoffs and the Intellistack rebrand before you commit a core process to it.
Read the full Formstack profileFillout profile last reviewed 2026-08-22; Formstack last reviewed 2026-08-22. Pricing is compiled from public sources and can change without notice. See our methodology.