Carbone vs Formstack Documents
Two tools that read Airtable directly, compared field by field from their records. Prices are the cheapest paid plan per month, as each vendor publishes it.
| Field | Carbone carbone.io ↗ |  Formstack Documents formstack.com ↗ |
|---|---|---|
| Sources | JSON API, Airtable, Zapier, Make or n8n | Salesforce, HubSpot, Airtable, built-in forms, JSON API, CSV upload, Zapier, Make or n8n |
| Connects to Airtable | Direct connection | Direct connection |
| Outputs | PDF, DOCX, XLSX, PPTX, HTML | PDF, DOCX, PPTX, e-sign documents |
| Use cases | Invoices, Reports, Contracts, Statements | Contracts, Reports, Proposals, Onboarding packs |
| Template editor | Word | Word, PDF form, Visual builder |
| Pricing model | Usage tiers | Flat monthly |
| Starting price | $28/mo (EUR 26, converted) | $250/mo |
| Free tier | Yes | No |
| Deployment | Cloud, Self-hosted, Open source | Cloud |
| Integrations | Zapier, Make, n8n | Zapier, DocuSign |
| Proof | None recorded | G2 4.5 (148) |
| Price checked | 20 Oct 2026 | 20 Oct 2026 |
What differs
Carbone starts at $28 a month and Formstack Documents at $250, a difference of $222. Carbone writes 5 formats and Formstack Documents 4; only Carbone lists XLSX and HTML; only Formstack Documents lists e-sign documents. Both connect to Airtable directly, without Zapier or Make in between. Carbone has a free tier; Formstack Documents does not.
More on each
Carbone profile · Carbone pricing · Carbone alternatives
Formstack Documents profile · Formstack Documents pricing · Formstack Documents alternatives
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