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Surveys · head to head

SurveyCTO vs Wunderkind

SurveyCTO logo

SurveyCTO

Surveys

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

From
Free
Free plan
Yes
Full reviewWebsite
Wunderkind logo

Wunderkind

Marketing

Identity resolution and triggered messaging for high-traffic retailers, formerly BounceX

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only SurveyCTO has a free tier, so it costs nothing to try first.
  • Each has a real cost: 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; Wunderkind pricing is never published and deals are annual with revenue-share terms and a floor, so the effective cost only becomes clear after a year of attributed revenue you have already paid against.
  • They diverge on capability: SurveyCTO covers Offline collection, Wunderkind covers Identity resolution network.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which SurveyCTO and Wunderkind actually diverge.

Attributes where SurveyCTO and Wunderkind differ
AttributeSurveyCTOWunderkind
Starting priceFreeOn request
Pricing modelPer month by submission volumequote
Free tierYesNo
PlatformsWeb, Android, iOSWeb, API
CategorySurveysMarketing

Identical on both: user rating (Not yet rated).

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 SurveyCTO

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

Only in Wunderkind

  • Identity resolution network
  • Triggered email
  • Text message marketing
  • Onsite behavioural messaging
  • Performance-linked pricing
  • Managed service model
  • Attribution reporting
  • Email service provider integration

What people use each for

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

SurveyCTO

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

Wunderkind

  • A large apparel retailer that captures email addresses from only a small share of its traffic and wants to message the rest of its cart abandonersnot SurveyCTO
  • A publisher converting anonymous readers into newsletter subscribers and paid subscription prospects at volumenot SurveyCTO
  • A travel brand with long consideration cycles that wants triggered messaging on browse behaviour without waiting for a form fillnot SurveyCTO
  • A retailer that already has a capable ESP and wants an additional revenue channel layered on top rather than a platform replacementnot SurveyCTO

Where each one falls short

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

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

Wunderkind

  • Pricing is never published and deals are annual with revenue-share terms and a floor, so the effective cost only becomes clear after a year of attributed revenue you have already paid against.
  • You pay against Wunderkinds own attribution of the revenue it claims to have driven, so the lookback window, credit rules and whether a genuine holdout test is run are commercial terms that materially change your bill and are easy to leave vague.
  • The model needs scale: a site without substantial traffic generates too few identity matches to clear a contract floor, which makes it uneconomic for mid-market retailers however good the pitch sounds.
  • Messaging people who never gave you their email address on your own site carries privacy exposure and brand risk, and it sits uncomfortably with several regulatory regimes and with some consumers regardless of legal defensibility.
  • The identity network is densest in the United States, so a European or Asian retailer gets materially lower match rates and a weaker business case, and the model interacts badly with strict consent regimes such as GDPR.

Pricing, plan by plan

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

Wunderkind

On request
  • Wunderkind for Email$undefined/year
    • Identity resolution and triggered email programmes
    • Managed strategy and campaign operation
    • Annual contract with performance-linked commercial terms
  • Wunderkind for Text$undefined/year
    • SMS programmes against the identity graph
    • Consent and suppression management
    • Annual contract with performance-linked commercial terms

Which should you pick?

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

Choose Wunderkind if

  • You need identity resolution network.
  • You work on Web, API.
  • You also want triggered email.
Wunderkind review

Questions people ask

Is SurveyCTO or Wunderkind better?
Neither clearly leads. SurveyCTO starts at Free and Wunderkind at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, SurveyCTO or Wunderkind?
SurveyCTO has a free tier; the other does not. Paid plans start at Free for SurveyCTO and On request for Wunderkind.
Does SurveyCTO or Wunderkind run on more platforms?
SurveyCTO runs on Web, Android, iOS. Wunderkind runs on Web, API.
Can I use SurveyCTO for free?
Yes. SurveyCTO has a free tier, so you can try it without paying. Wunderkind starts at On request.
What is SurveyCTO best used for?
SurveyCTO is most often used for a household survey with 200 enumerators across a country where paying per seat would cost more than the fieldwork, an impact evaluation that needs audio auditing and timing metadata to prove interviews were conducted as reported, a panel study revisiting the same households annually and needing offline case assignment to find them again, a statistics unit that must keep data inside a specific region and produce a soc 2 report for its funder. Of those, a household survey with 200 enumerators across a country where paying per seat would cost more than the fieldwork and an impact evaluation that needs audio auditing and timing metadata to prove interviews were conducted as reported are not what Wunderkind is typically brought in for.
What can SurveyCTO do that Wunderkind cannot?
SurveyCTO covers Offline collection, XLSForm authoring, Automated quality checks, Audio auditing. Wunderkind covers Identity resolution network, Triggered email, Text message marketing, Onsite behavioural messaging.

Answered from the vendors’ own pages

SurveyCTO: Do I pay per enumerator?

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

Wunderkind: Is Wunderkind the same as BounceX?

Yes. BounceX rebranded as Wunderkind in 2019; the identity resolution and triggered messaging model is the same lineage.

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.

Wunderkind: How is Wunderkind priced?

It is not published. Contracts are annual and structured around a share of revenue Wunderkind attributes to its messages, usually with a minimum commitment.

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.

Wunderkind: Does it replace my email platform?

No. It runs alongside your existing ESP and adds a triggered channel; it is not a campaign management replacement.

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.

Wunderkind: Will it work outside the United States?

Less well. The identity network is concentrated in the US, and consent requirements in Europe reduce both match rates and the legal room to message unidentified visitors.

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