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Surveys · head to head

Formstack vs KoboToolbox

Formstack logo

Formstack

Surveys

Form builder with document generation and e-signature

From
On request
Rated
-
Full reviewWebsite
KoboToolbox logo

KoboToolbox

Surveys

Offline-first data collection for humanitarian, development and research field work

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only KoboToolbox has a free tier, so it costs nothing to try first.
  • Each has a real cost: Formstack more expensive than form builders that only collect, which is the fair comparison for simple use; KoboToolbox the free Community plan caps at 5,000 submissions a month and 1 GB of file storage, and any form collecting photographs exhausts storage long before it exhausts the submission count.
  • They diverge on capability: Formstack covers Form builder, KoboToolbox covers Offline data collection.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Formstack and KoboToolbox actually diverge.

Attributes where Formstack and KoboToolbox differ
AttributeFormstackKoboToolbox
Starting priceOn requestFree
Pricing modelTiered monthly subscription published on the vendor site; HIPAA-capable plans priced separatelyPer month by submission count
Free tierNoYes
PlatformsWeb, CloudWeb, Android, Self-hosted

Identical on both: 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 Formstack

  • Form builder
  • Document generation
  • E-signature
  • Workflow routing
  • Salesforce integration
  • Compliance features

Only in KoboToolbox

  • Offline data collection
  • XLSForm and browser form builder
  • Skip logic and validation
  • Multilingual forms
  • GPS and media capture
  • Case management
  • Exports and analysis
  • Self-hosting

What people use each for

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

Formstack

  • Processes where a submitted form must become a signed documentnot KoboToolbox
  • Regulated intake needing HIPAA-capable handlingnot KoboToolbox
  • Salesforce shops wanting forms and documents inside the CRMnot KoboToolbox

KoboToolbox

  • A rapid needs assessment after a disaster where enumerators work for days without mobile coveragenot Formstack
  • A ministry of health running a national survey that must be self-hosted in country for data protection reasonsnot Formstack
  • An NGO running the same longitudinal household survey in four languages across three countriesnot Formstack
  • A research group that needs a free instrument for a modest sample and an SPSS export at the endnot Formstack

Where each one falls short

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

Formstack

  • More expensive than form builders that only collect, which is the fair comparison for simple use
  • Document generation and signature sit in higher tiers, so the headline price is not the working price
  • The interface has accumulated features over a long life and shows it
  • Overkill where a form only needs to collect an answer

KoboToolbox

  • The free Community plan caps at 5,000 submissions a month and 1 GB of file storage, and any form collecting photographs exhausts storage long before it exhausts the submission count.
  • The Starter paid plan allows only 1,000 submissions a month for $21, which is fewer than the free nonprofit tier, so a small commercial user pays more for less than a charity gets free.
  • Eligibility for the free plan depends on Kobo's assessment of your organisation and purpose, which introduces an approval step that a consultancy working on behalf of an NGO may not clear.
  • Self-hosting is genuinely possible but the stack is substantial to deploy and maintain, so a ministry choosing it for data residency reasons takes on real infrastructure staffing cost.
  • Analysis and reporting inside the platform are basic compared with dedicated tools, so most serious use exports to Excel, Power BI or statistical software, and that export step is where data governance often gets loose.

Pricing, plan by plan

Formstack

On request

No published plan breakdown. See the Formstack review.

KoboToolbox

Free
  • CommunityFree
    • Free for qualifying nonprofit and public good organisations
    • 5,000 submissions per month
    • 1 GB file storage
  • Starter$21/month
    • 1,000 submissions per month
    • 0.5 GB file storage
    • For private and for-profit use
  • Professional$129/month
    • 25,000 submissions per month or 300,000 per year
    • Unlimited file storage
    • Priority support
  • Teams$undefined/month
    • 50,000 submissions per month or 600,000 per year
    • Shared team administration
    • Pricing published by plan tier

Which should you pick?

Choose Formstack if

  • You need form builder.
  • You work on Web, Cloud.
  • You also want document generation.
Formstack review

Choose KoboToolbox if

  • You need offline data collection.
  • You want to start without paying.
  • You work on Web, Android, Self-hosted.
  • You also want xlsform and browser form builder.
KoboToolbox review

Questions people ask

Is Formstack or KoboToolbox better?
Neither clearly leads. Formstack starts at On request and KoboToolbox at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Formstack or KoboToolbox?
KoboToolbox has a free tier; the other does not. Paid plans start at On request for Formstack and Free for KoboToolbox.
Does Formstack or KoboToolbox run on more platforms?
Formstack runs on Web, Cloud. KoboToolbox runs on Web, Android, Self-hosted.
Can I use KoboToolbox for free?
Yes. KoboToolbox has a free tier, so you can try it without paying. Formstack starts at On request.
What is Formstack best used for?
Formstack is most often used for processes where a submitted form must become a signed document, regulated intake needing hipaa-capable handling, salesforce shops wanting forms and documents inside the crm. Of those, processes where a submitted form must become a signed document and regulated intake needing hipaa-capable handling are not what KoboToolbox is typically brought in for.
What can Formstack do that KoboToolbox cannot?
Formstack covers Form builder, Document generation, E-signature, Workflow routing. KoboToolbox covers Offline data collection, XLSForm and browser form builder, Skip logic and validation, Multilingual forms.

Answered from the vendors’ own pages

Formstack: What does Formstack cost?

It publishes tiered monthly pricing; document generation and e-signature sit in higher tiers, and HIPAA-capable plans are priced separately.

KoboToolbox: Is KoboToolbox free?

Free for qualifying nonprofit and public good organisations under the Community plan, currently 5,000 submissions a month and 1 GB of storage. Commercial use requires a paid plan from $21 a month.

Formstack: What makes it different from a plain form builder?

It generates documents from submissions and collects signatures on them, which is the step that otherwise involves retyping form data into a template.

KoboToolbox: Who funds it?

Kobo Inc is a US nonprofit funded roughly 38 per cent by grants and contributions and 62 per cent by service contracts, subscriptions and training, based on its 2024 figures.

Formstack: Is it HIPAA compliant?

It offers HIPAA-capable plans for regulated data. That is a plan-level feature, not the default.

KoboToolbox: Can I host it myself?

Yes. The server stack is open source and is regularly deployed in country for data residency reasons.

KoboToolbox: Are forms portable?

Yes. It uses XLSForm and ODK standards, so instruments move between Kobo and other ODK-compatible servers.

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