# BlockSurvey vs OpnForm

BlockSurvey records 302,480 monthly visits with -14.9% month-over-month growth and Freemium, Paid pricing. OpnForm records 76,221 monthly visits with +169% growth and Freemium, Free Trial pricing.

| Metric | [BlockSurvey](https://openaitools.app/tool/block-survey) | [OpnForm](https://openaitools.app/tool/opnform) |
| :--- | :--- | :--- |
| Website URL | https://blocksurvey.io | https://opnform.com |
| Categories | AI Forms, AI Question Generator, AI For Data Analytics, No-Code&Low-Code | AI Forms, No-Code&Low-Code |
| Pricing Model | Freemium, Paid | Freemium, Free Trial |
| Monthly Visits | 302,480 | 76,221 |
| MoM Growth Rate | -14.9% | +169% |
| Primary Market | United States | United States |
| Direct Visits | 259,186 | 37,280 |
| Review Score | 4.2 | 4.5 |
| Saved Count | 0 | 1 |
| Supported Platforms | Website | Website |

## BlockSurvey

BlockSurvey starts from a simple premise: the people who answer your survey deserve privacy, and the organisation that runs it deserves sole ownership of the data. Answers are encrypted on the respondent's device before they ever reach BlockSurvey's servers, so no one — including the platform — holds the key. On top of that sit no trackers, no cookies, no ads, and the ability to collect fully anonymous responses.

The AI layer covers the whole research cycle. You can generate a well-structured, less biased questionnaire from a prompt, rephrase unclear questions, create answer options, run adaptive follow-up questions inside open-ended items, then move to automated thematic and sentiment analysis, anomaly detection and data encoding. Longitudinal analysis compares waves of a repeated survey so you can see which changes are statistically meaningful and where a trend is heading.

Distribution and integration are handled flexibly: email and SMS campaigns, link, QR and embed sharing, audience management, automation, white-label branding and multilingual surveys. BlockSurvey also exposes an MCP connector, so you can create, edit and publish surveys directly from Claude, Claude Code or ChatGPT. Compliance-oriented features target HIPAA, GDPR and similar regimes, with dedicated solutions for market research, healthcare, institutional research, activism and non-profit work.

**Pricing & Plans:** Freemium with paid plans. A free tier supports basic survey building; paid subscriptions unlock advanced AI analysis, higher response volumes, white-label branding, compliance features and team collaboration. Non-profit discounts are available.

- **Zero-Knowledge Encryption:** Responses are encrypted on the respondent's device before upload, so only the survey owner holds the key and can decrypt the data.
- **AI Survey Creation:** Generate structured, less biased questionnaires from a prompt, refine wording, create answer options and add skip logic and multilingual support.
- **AI Analysis Suite:** Automated thematic analysis, sentiment detection, anomaly flagging and data encoding turn open-ended answers into usable categorical insight.
- **Conversational & Adaptive Surveys:** Run natural back-and-forth interviews with dynamic follow-up questions that adapt to each respondent for deeper qualitative data.
- **MCP Connector:** Connect BlockSurvey to Claude, Claude Code and ChatGPT to create, edit and publish surveys without leaving your AI assistant.

**Strengths:** Client-side encryption means the platform itself cannot read responses; No trackers, cookies or ads by design; AI covers creation, conversational interviewing and analysis in one place; MCP connector lets you manage surveys from ChatGPT or Claude

**Limitations:** Advanced AI features and higher volumes sit behind paid tiers; Zero-knowledge encryption can complicate deep cross-referencing of raw data; Some compliance-specific features are packaged for particular industries

[Profile (Markdown)](https://openaitools.app/tool/block-survey.md)

## OpnForm

OpnForm is a form-building platform aimed at teams that want modern form UX without the response caps and lock-in typical of commercial survey tools. The editor is drag-and-drop and supports both single-page and multi-step layouts, so a long intake questionnaire can be broken into a conversational flow. Fields can be governed by conditional logic, calculations and answer piping, and forms can be styled with custom themes, brand colours and fonts. AI assistance is available when you want it for drafting questions or fields, but it stays opt-in rather than being forced into the workflow.

What differentiates OpnForm most is its open-source posture. The full codebase is public and auditable, and organisations can choose between the vendor's hosted cloud, an EU-based cloud deployment, or running the software on their own infrastructure. That matters for companies with data-residency rules or internal security reviews. The product also ships team-oriented controls such as shared workspaces, roles and audit history for form and submission activity, along with SSO and SAML for enterprise accounts and 2FA support.

On the automation side, OpnForm connects to the tools teams already use. Submissions can flow to Slack, Discord or Telegram, sync to Google Sheets or Zapier, trigger notifications and routing rules, or be pulled through a documented REST API and webhooks. Payments are handled natively through Stripe, which makes it usable for registration fees and simple product orders. Forms can be distributed by link, embedded on a website or inside Notion, published on a custom domain, or exported as a QR code for offline collection.

**Pricing & Plans:** Freemium. A generous free tier includes unlimited form submissions with no per-response charges, and paid plans add more control, branding removal, team and enterprise features. EU hosting and self-hosting options are available; check the site's pricing page for current tiers.

- **Open-source, self-hostable form builder:** The full codebase is public and auditable, and you can run OpnForm on the vendor cloud, an EU-hosted instance, or your own infrastructure for complete data ownership.
- **AI assistance when you want it:** Optional AI help for building forms and fields, designed to stay out of the way when you would rather write everything yourself.
- **Smart logic and calculations:** Conditional logic, computed fields, answer piping, hidden fields and redirect-on-submit rules let one form adapt to many different respondents.
- **Unlimited submissions without per-response fees:** Collect as many responses as you need even on the free plan, with no hidden quotas or surprise overage charges.
- **Integrations, payments and API access:** Send data to Slack, Discord, Telegram, Google Sheets or Zapier, take payments via Stripe, and automate anything else with webhooks and a REST API.

**Strengths:** Genuinely open-source with a public codebase and self-hosting path; Unlimited submissions on the free tier with no per-response billing; Strong automation coverage through native integrations, webhooks and a REST API; Enterprise-ready controls including SSO, SAML, roles, audit history and EU hosting

**Limitations:** Self-hosting shifts update, backup and security responsibilities onto your own team; The deep feature set, especially logic and integrations, takes time to learn; Some enterprise compliance capabilities are still described as in progress rather than fully certified

[Profile (Markdown)](https://openaitools.app/tool/opnform.md)

## Frequently Asked Questions

### How do BlockSurvey and OpnForm compare in monthly traffic?

BlockSurvey has 302,480 monthly visits, while OpnForm has 76,221. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

BlockSurvey has a month-over-month growth rate of -14.9%; OpnForm has +169%.

### How does pricing compare?

BlockSurvey: Freemium, Paid. Freemium with paid plans. A free tier supports basic survey building; paid subscriptions unlock advanced AI analysis, higher response volumes, white-label branding, compliance features and team collaboration. Non-profit discounts are available. OpnForm: Freemium, Free Trial. Freemium. A generous free tier includes unlimited form submissions with no per-response charges, and paid plans add more control, branding removal, team and enterprise features. EU hosting and self-hosting options are available; check the site's pricing page for current tiers.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Fillout](https://openaitools.app/tool/fillout-com) | 3,923,917 | -9.7% | Freemium | Build powerful forms, surveys and quizzes with AI in minutes | [.md](https://openaitools.app/tool/fillout-com.md) |
| 2 | [forms.app](https://openaitools.app/tool/forms-app) | 987,157 | -11.2% | Freemium, Paid | Build forms, surveys and quizzes in seconds — with unlimited free responses | [.md](https://openaitools.app/tool/forms-app.md) |
| 3 | [Makeform](https://openaitools.app/tool/makeform) | 160,692 | -10.8% | Freemium | Describe your form, let AI build it | [.md](https://openaitools.app/tool/makeform.md) |
| 4 | [Opinion Stage AI](https://openaitools.app/tool/opinion-stage-ai) | 120,996 | +2.5% | Contact for Pricing | Better interactive quizzes and lead capture polls, but less focused on secure research surveys and data privacy. | [.md](https://openaitools.app/tool/opinion-stage-ai.md) |
| 5 | [FormHug](https://openaitools.app/tool/formhug) | 92,118 | -4.8% | Freemium, Free | Free AI form builder for humans and AI agents | [.md](https://openaitools.app/tool/formhug.md) |
| 6 | [Perspective AI](https://openaitools.app/tool/perspective-ai) | 62,936 | +28.7% | Freemium | Turn static forms into adaptive AI conversations with structured output | [.md](https://openaitools.app/tool/perspective-ai.md) |
| 7 | [Voiceform](https://openaitools.app/tool/voiceform) | 54,210 | +5.6% | Contact for Pricing | AI-moderated voice and video interviews that scale survey research to thousands of people at once | [.md](https://openaitools.app/tool/voiceform.md) |
| 8 | [Yay! Forms](https://openaitools.app/tool/yay-forms) | 39,209 | +13.3% | Freemium, Free Trial | Build high-converting AI forms, surveys, and quizzes in seconds | [.md](https://openaitools.app/tool/yay-forms.md) |
| 9 | [Formless by Typeform](https://openaitools.app/tool/formless-by-typeform) | 24,565 | +168.6% | Freemium | Conversational AI forms that ask and answer questions | [.md](https://openaitools.app/tool/formless-by-typeform.md) |
| 10 | [Buildform](https://openaitools.app/tool/buildform) | 10,146 | +12.1% | Freemium, Paid | AI form builder that turns plain-language prompts into high-converting conversational forms | [.md](https://openaitools.app/tool/buildform.md) |

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Source: https://openaitools.app/compare/block-survey-vs-opnform

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