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Surveys · head to head

Fillout vs SurveyCTO

Fillout logo

Fillout

Surveys

Form builder that reads and writes records in Airtable, Notion, HubSpot and Salesforce, with unlimited seats on every plan including the free one

From
Free
Rated
-
Full reviewWebsite
SurveyCTO logo

SurveyCTO

Surveys

Offline field survey platform priced by submissions rather than seats, built for research data quality

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Fillout the Business plan is marketed with unlimited responses but the fair use policy names thresholds of 30,000 submissions a month, 250,000 in total, 500 forms per account and 50 GB of uploads a month, above which the vendor may limit or suspend features, so unlimited means unmetered rather than uncapped.; SurveyCTO pricing is by submission volume, forms and storage rather than by users, so a small team running continuous high-volume collection can pay more than a 200-person survey team that runs for six weeks
  • They diverge on capability: Fillout covers Unlimited seats and forms, SurveyCTO covers Offline collection.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Fillout and SurveyCTO actually diverge.

Attributes where Fillout and SurveyCTO differ
AttributeFilloutSurveyCTO
Pricing modelPer month by response countPer month by submission volume
PlatformsWeb, APIWeb, Android, iOS

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Surveys).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Fillout

  • Unlimited seats and forms
  • Database read and write
  • Soft response limits
  • Conditional logic and calculations
  • EU hosting
  • REST API and webhooks

Only in SurveyCTO

  • Offline collection
  • XLSForm authoring
  • Automated quality checks
  • Audio auditing
  • Case management
  • Random assignment
  • Server region selection

What people use each for

The jobs each tool is most often brought in to do.

Fillout

  • A team already running on Airtable or Notion that wants forms which update existing records rather than appending new rowsnot SurveyCTO
  • An organisation with many occasional form builders, where per-seat pricing elsewhere would cost more than the forms are worthnot SurveyCTO
  • Replacing a survey tool, a scheduling tool and a payment link with one form that does all threenot SurveyCTO
  • Public forms that must keep collecting through an unexpected traffic spike rather than shutting off at a quotanot SurveyCTO

SurveyCTO

  • A household survey with 200 enumerators across a country where paying per seat would cost more than the fieldworknot Fillout
  • An impact evaluation that needs audio auditing and timing metadata to prove interviews were conducted as reportednot Fillout
  • A panel study revisiting the same households annually and needing offline case assignment to find them againnot Fillout
  • A statistics unit that must keep data inside a specific region and produce a SOC 2 report for its fundernot Fillout

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Fillout

  • The Business plan is marketed with unlimited responses but the fair use policy names thresholds of 30,000 submissions a month, 250,000 in total, 500 forms per account and 50 GB of uploads a month, above which the vendor may limit or suspend features, so unlimited means unmetered rather than uncapped.
  • EU data residency begins on the Team plan at 250 USD per month, more than three times the Business price, and is not applied automatically; you must upgrade and then raise a support request to be moved.
  • The Team plan is hidden behind a secondary tab that does not render without interaction, so buyers reading the pricing page see Business at 75 USD as the top self-serve tier and only discover the 250 USD step when they ask for single sign-on or EU hosting.
  • The enterprise marketing page lists hosting in the United States, EU, United Kingdom, Australia and Canada, but the security documentation and subprocessor list name only the United States and the EU, so three of those five regions should be confirmed in writing before they are relied on.
  • The vendor is SOC 2 Type 2 but claims neither ISO 27001 nor HIPAA anywhere in its documentation, and it is angel-funded with no disclosed institutional round while the parent company now trades as Zite and ships a separate AI application builder.

SurveyCTO

  • Pricing is by submission volume, forms and storage rather than by users, so a small team running continuous high-volume collection can pay more than a 200-person survey team that runs for six weeks
  • Forms are authored in XLSForm spreadsheet syntax, which is precise and versionable but has a real learning curve, and organisations without someone comfortable in it stall at form design
  • Overage is charged at 100 US dollars per 1,000 extra submissions, which is easy to trigger on the Basic tier at 5,000 a month and produces surprise invoices during an active field round
  • Server region selection only appears on the Pro tier and a custom GDPR data processing agreement only on Advanced, so European data protection requirements push the price to at least 315 and often 630 dollars a month regardless of volume
  • It is built for structured research fieldwork, not for business process forms, so it has no dispatch, no invoicing and no formatted document output, and a field service business would be buying the wrong tool

Pricing, plan by plan

Fillout

Free
  • FreeFree
    • 1,000 responses per month
    • Unlimited forms and unlimited seats
    • 20 MB per file upload
  • Starter$15/month
    • 180 USD per year billed annually, a stated 20 percent saving on monthly billing
    • 2,000 responses per month
    • Unlimited forms and seats
  • Pro$40/month
    • 480 USD per year billed annually
    • 5,000 responses per month
    • Branding fully removed at this tier
  • Business$75/month
    • 900 USD per year billed annually
    • Marketed as unlimited responses, subject to a fair use threshold near 30,000 per month
    • 1 GB per file upload

SurveyCTO

Free
  • CommunityFree
    • Permanent free subscription for testing and training
    • 10 forms
    • 200 monthly submissions
  • Basic$225/month
    • Billed annually, 250 USD month to month
    • 100 forms
    • 10 GB storage
  • Pro$315/month
    • Billed annually, 350 USD month to month
    • 500 forms
    • 25 GB storage
  • Advanced$630/month
    • Billed annually, 700 USD month to month
    • Unlimited forms, storage and submissions
    • Advanced offline case management

Which should you pick?

Choose Fillout if

  • You need unlimited seats and forms.
  • You want to start without paying.
  • You work on Web, API.
  • You also want database read and write.
Fillout review

Choose SurveyCTO if

  • You need offline collection.
  • You want to start without paying.
  • You work on Web, Android, iOS.
  • You also want xlsform authoring.
SurveyCTO review

Questions people ask

Is Fillout or SurveyCTO better?
Neither clearly leads. Fillout starts at Free and SurveyCTO at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fillout or SurveyCTO?
Fillout starts at Free and SurveyCTO at Free.
Does Fillout or SurveyCTO run on more platforms?
Fillout runs on Web, API. SurveyCTO runs on Web, Android, iOS.
Can I use Fillout for free?
Both have a free tier, so you can try either at no cost before committing.
What is Fillout best used for?
Fillout is most often used for a team already running on airtable or notion that wants forms which update existing records rather than appending new rows, an organisation with many occasional form builders, where per-seat pricing elsewhere would cost more than the forms are worth, replacing a survey tool, a scheduling tool and a payment link with one form that does all three, public forms that must keep collecting through an unexpected traffic spike rather than shutting off at a quota. Of those, a team already running on airtable or notion that wants forms which update existing records rather than appending new rows and an organisation with many occasional form builders, where per-seat pricing elsewhere would cost more than the forms are worth are not what SurveyCTO is typically brought in for.
What can Fillout do that SurveyCTO cannot?
Fillout covers Unlimited seats and forms, Database read and write, Soft response limits, Conditional logic and calculations. SurveyCTO covers Offline collection, XLSForm authoring, Automated quality checks, Audio auditing.

Answered from the vendors’ own pages

Fillout: Are seats really unlimited?

Yes. The vendor states there are no per-seat charges on any plan, including Free, and forms are unlimited too. Responses per month is the only meter below the Business tier.

SurveyCTO: Do I pay per enumerator?

No. Users and devices are unlimited on every paid tier. You pay for monthly submissions, forms and storage.

Fillout: What happens when I exceed my response quota?

Nothing breaks. Forms keep collecting, and you can upgrade, buy bulk submissions or wait for the monthly reset.

SurveyCTO: Is there a free version?

Yes, a permanent community subscription with 10 forms, 200 monthly submissions and 200 MB of storage, intended for testing and training rather than production.

Fillout: Can I host respondent data in the EU?

Only from the Team plan at 250 USD per month, and only after contacting support to switch. Note that email and payment subprocessors remain in the United States regardless.

SurveyCTO: What happens if I exceed my submissions?

Extra credits are 100 US dollars per 1,000, with discounts of 20 per cent or more at volume. Plan the tier around your peak field month, not your average.

Fillout: Is the Business plan really unlimited responses?

It is unmetered, not uncapped. The fair use policy names roughly 30,000 submissions a month as the point at which the vendor may intervene, so treat that as the practical ceiling.

SurveyCTO: Can I choose where the data is stored?

Only on Pro and above. If data residency matters, budget for at least the Pro tier.

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