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SplitForms vs Formstack
Formstack alternative: keep your own HTML form
Formstack is a hosted form builder with no free plan: a 14-day trial, then Forms at $83 per month paid annually ($99 monthly) for 1 builder user, 25 forms and 1,000 submissions per form. splitforms is an HTML form backend: 500 free submissions total with no card and no time limit, unlimited forms, then Pro at $5 per month for 5,000 a month with signed webhooks. Pick Formstack for document generation, e-signatures, HIPAA add-ons and Salesforce workflows; pick splitforms when the form already lives on your site and you only need the backend.
Read our full Formstack review
What does Formstack cost compared with splitforms?
| Need | splitforms | Formstack |
|---|---|---|
| Free plan | 500 submissions total, unlimited forms | No free plan; 14-day trial |
| Entry paid plan | $5 per month Pro (5,000 per month) | $83 per month paid annually, or $99 monthly (Forms, 1 builder user, 25 forms, 1,000 submissions per form) |
| 5,000 submissions a month | $5 per month Pro (5,000 per month), or $49 per year Annual (15,000 per month) | Suite: $250 per month paid annually, or $299 monthly (3 builder users, 100 forms, 5,000 submissions per form) |
| Webhooks | Pro, $5/mo, HMAC-signed | Available through the Formstack API webhook endpoints |
| Integrations | Google Sheets, Slack, Notion, Airtable and Discord on paid plans | 250+ integrations, including Salesforce, Google Sheets, HubSpot, Airtable, Stripe, PayPal and Zapier |
Formstack prices from formstack.com/pricing, checked November 10, 2026. Formstack's Forms plan counts submissions per form, not across the account. splitforms pricing
- 500 free submissions
- $5 per month Pro
- 10 min to migrate
splitforms or Formstack
Short answer: which one should you pick?
Choose Formstack if you want a hosted form builder plus document generation, e-signatures, workflow automation, HIPAA add-ons or Salesforce-native forms. Its Forms plan is $83 per month paid annually ($99 monthly) for 1 builder user, 25 forms and 1,000 submissions per form, and the Suite plan adds documents and e-signatures at $250 per month paid annually ($299 monthly).
Choose splitforms if the form already lives on your site as HTML and you need a backend for storage, email, spam filtering and webhooks. Free is 500 submissions total with no card and no time limit, Pro is $5 per month for 5,000 a month, and Annual is $49 per year for 15,000 a month.
Feature-by-feature comparison
How does splitforms compare to Formstack?
A side-by-side look at the details developers actually care about when comparing splitforms and Formstack.
| Feature | splitforms | Formstack |
|---|---|---|
| Free tier | 500 submissions, no card, no time limit, unlimited forms | No free plan; 14-day trial |
| Cheapest paid plan | $5 per month Pro (5,000 per month) or $49 per year Annual (15,000 per month) | $83 per month paid annually, or $99 monthly (Forms, 1,000 submissions per form) |
| Submission dashboard | Yes, with search & export | Yes |
| Webhook delivery | Signed with HMAC-SHA256 (sha256= signature header); 8-second timeout; one automatic retry after about 2 seconds on network errors, timeouts and 5xx responses (4xx is not retried); delivery log in the dashboard. Paid plans (Pro and Annual). | Yes, through the Formstack API |
| File uploads | Paid plans: 5 files at 5 MB each (500 MB on Pro, 5 GB on Annual) | Yes |
| Spam protection | Honeypot, time-trap, rate limits + automatic spam scoring | See Formstack's documentation for current spam controls |
| Host requirement | None — works anywhere | None (hosted builder or embed) |
Pricing checked November 10, 2026. Source: Formstack's pricing page.
Primary sources checked for this comparison
- Formstack pricing
- Formstack API overview
- Formstack submissions API
- Formstack webhooks API
- Formstack integrations
Published by SplitForms, a competing provider. Based on the linked documentation, not a hands-on reliability benchmark.
Verdict
Formstack is a hosted form builder for teams that need more than data collection: document generation, e-signatures, workflow automation, HIPAA add-ons and Salesforce-native forms. Its Forms plan is $83 per month paid annually ($99 monthly) for 1 builder user, 25 forms and 1,000 submissions per form, and there is no free plan, only a 14-day trial. splitforms is a different tool: an HTML form backend with 500 free submissions total, unlimited forms, Pro at $5 per month for 5,000 a month, and Annual at $49 per year for 15,000 a month. Keep Formstack when its builder, documents, signatures or compliance features are the reason you are paying. Choose splitforms when the form already lives on your site and you need storage, email, spam filtering and webhooks at a lower price.
Honest take
When should you stay with Formstack?
Stay on Formstack if you need its hosted builder, document generation, e-signatures, HIPAA add-on, Salesforce-native forms or a large integration catalogue. Those are real strengths that splitforms does not replace.
Stay on Formstack too if non-technical staff build and maintain forms in its editor, or if procurement has already approved it for regulated data. splitforms is built for teams that own the HTML and want a lightweight backend.
Leave Formstack in about 10 minutes
How switching works
Formstack hosts the form for you, so switching means rebuilding it as your own HTML form. After that, the markup, field names and styling are yours.
Rebuild the form in HTML
Recreate your Formstack fields as an HTML form on your own page, point its action at https://splitforms.com/api/submit and add a hidden access_key field.
Test, then cut over
Send a test entry, confirm it reaches your inbox and dashboard, then replace the Formstack embed.
Where submissions go
Every submission lands in your inbox and a searchable dashboard on every plan, including Free. Paid plans add webhooks and integrations:
AI agents can manage forms through the splitforms MCP server, included on every plan.
What it costs
- Free$0500 submissions total, no card, no time limit, unlimited forms
- Pro$5/month5,000 submissions a month, every paid feature
- Annual$49 per year (about $4.08 per month)15,000 submissions a month, every Pro feature
Get started in minutes
Ship your first form without the setup tax.
Drop one endpoint into the HTML you already have and submissions start flowing — no backend to host, no SDK to install, no lengthy onboarding. Point your form, hit submit, and watch the entries land.
- Works with any stack — plain HTML, React, Vue, or static sites
- 500 free submissions total, no credit card
- Live in less time than it takes to read the Formstack pricing page
See everything
One dashboard for every submission.
Search, filter, and export every entry, watch your analytics update live, and let the built-in spam shield drop junk before it ever reaches your inbox — all in one clean control room.
- Real-time entries with search, filters, and CSV export
- Automatic spam filtering, on by default
- Included on the free plan — not a paid upgrade
Where your leads go
Route every lead to the tools you already use.
Forward submissions to email, Google Sheets, your CRM, or any webhook the moment they arrive. When you move off Formstack, your leads keep landing exactly where your team expects them — nothing to re-wire.
- Email, Sheets, CRM, and webhook delivery built in
- Connect the stack you have without extra middleware
- Same fields, same field names — migrate without a rewrite
Common questions
Frequently asked questions.
View all FAQsHow do I export my Formstack data before switching?
Use Formstack's own export or API before you cancel. The v2025 API lists submissions per form at GET /api/v2025/forms/{formId}/submissions and across all forms at GET /api/v2025/submissions, authenticated with a personal access token. Export the submissions and any uploaded files you need, then keep the Formstack account active until the export is verified.
Do I have to recreate my Formstack forms in splitforms?
Yes, if the form was built in Formstack's hosted builder. splitforms accepts a normal HTML form, so rebuild the fields as HTML or in your framework, keep the same input names, and point the action at https://splitforms.com/api/submit with a hidden access_key. If you already have the form as HTML, only the action URL and access key change.
When is Formstack still the better fit?
Keep Formstack when you need its hosted builder, document generation, e-signatures, HIPAA add-on, Salesforce-native forms or a large integration catalogue. Those are real Formstack strengths that splitforms does not replace. splitforms is the better fit when the form already lives on your site and you need a low-cost backend for storage, email, spam filtering and webhooks.
Does Formstack have a free plan?
No. Formstack offers a 14-day free trial of its core Forms product with no credit card, then Forms starts at $83 per month paid annually or $99 per month billed monthly. splitforms Free is 500 submissions total with no card and no time limit.
How much does Formstack cost at 1,000 submissions a month?
Formstack's Forms plan is $83 per month paid annually ($99 monthly) and includes 1,000 submissions per form, 25 forms and 1 builder user. splitforms Pro is $5 per month for 5,000 submissions a month across unlimited forms. Formstack's Suite plan is $250 per month paid annually ($299 monthly) for 5,000 submissions per form, 100 forms and 3 builder users.
Can I keep using the Formstack API after switching?
No. The Formstack API is tied to a Formstack account and personal access token. splitforms has its own REST API at https://splitforms.com/api/submit and a documented API reference; webhooks are signed with HMAC-SHA256 on paid plans.
Deep dive
The full picture, no fluff.
Short, honest answers on pricing, migration, and why teams move from Formstack to splitforms.
01Pricing: what each plan costs at the same volume
Formstack has no free plan. Its 14-day trial covers the core Forms product with no credit card, then Forms is $83 per month paid annually or $99 per month billed monthly, with 1 builder user, 25 forms, 1,000 submissions per form and 2GB of storage.
Formstack Suite is $250 per month paid annually or $299 per month billed monthly, with 3 builder users, 100 forms, 5,000 submissions per form, 10GB of storage, 250 document deliveries per month and unlimited e-signatures. Salesforce and Enterprise plans are custom-priced.
splitforms Free is 500 submissions total across unlimited forms. Pro is $5 per month for 5,000 submissions a month, and Annual is $49 per year for 15,000 a month. Formstack counts submissions per form; splitforms counts them across the account.
02Formstack vs splitforms: feature comparison
- Form building
- Formstack hosts the builder and the form, with embed or share options. splitforms is a backend for forms you write in HTML, with free templates to copy.
- Documents and signatures
- Formstack Suite generates documents and collects e-signatures. splitforms does not offer either.
- Compliance
- Formstack sells a HIPAA and compliance add-on on Forms and Suite, and includes it in Salesforce and Enterprise plans. splitforms does not offer a HIPAA BAA.
- Integrations
- Formstack lists 250+ integrations, including Salesforce, Google Sheets, HubSpot, Airtable, Stripe, PayPal and Zapier. splitforms has Google Sheets, Slack, Notion, Airtable and Discord integrations on paid plans.
- API and webhooks
- Formstack has a REST API v2025 with personal access tokens and webhook endpoints. splitforms has a POST endpoint at https://splitforms.com/api/submit, a documented API reference, and HMAC-SHA256 signed webhooks on paid plans.
- Hosting
- Formstack is a hosted builder. splitforms is host-independent: the form stays on your site and only the action points at splitforms.
03How do you migrate from Formstack to splitforms?
Step 1: export the submissions and uploaded files you need from Formstack, using its export or the v2025 API. Keep the Formstack account active until the export is verified.
Step 2: rebuild each Formstack form as HTML or in your framework, keeping the same input names. Step 3: set the form action to https://splitforms.com/api/submit and add a hidden access_key input. Step 4: send a test submission and confirm it appears in the splitforms dashboard and your inbox.
Step 5: recreate any webhook receivers against the splitforms payload, then run both endpoints in parallel for a day before you cancel Formstack. If the form was already plain HTML, only the action URL and access key change.
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