# BlockSurvey vs Thunderbit

BlockSurvey records 302,480 monthly visits with -14.9% month-over-month growth and Freemium, Paid pricing. Thunderbit records 391,726 monthly visits with -21.9% growth and Freemium, Contact for Pricing pricing.

| Metric | [BlockSurvey](https://openaitools.app/tool/block-survey) | [Thunderbit](https://openaitools.app/tool/thunderbit) |
| :--- | :--- | :--- |
| Website URL | https://blocksurvey.io | https://thunderbit.com |
| Categories | AI Forms, AI Question Generator, AI For Data Analytics, No-Code&Low-Code | AI Web Scraping, AI Lead Generation, AI Data Mining, AI Social Media |
| Pricing Model | Freemium, Paid | Freemium, Contact for Pricing |
| Monthly Visits | 302,480 | 391,726 |
| MoM Growth Rate | -14.9% | -21.9% |
| Primary Market | United States | United States |
| Direct Visits | 259,186 | 80,215 |
| Review Score | 4.2 | 4.4 |
| 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)

## Thunderbit

Thunderbit is an agentic web scraper built for teams that need data out of websites but do not want to maintain selectors or write scraping code. It installs as a Chrome or Edge extension: open any page, click extract, and the AI reads the layout and proposes the fields that make sense — product names, prices, emails, phone numbers, listings, reviews, and more. You confirm or refine the request in plain English, and the agent returns a clean table with the rows you asked for.

For high-volume sites it offers two faster paths. Pre-built templates cover popular destinations such as Amazon, eBay, Google Maps, Zillow-style listing sites, social platforms, and directories, returning the same fields every time without consuming AI credits. Agent mode handles less structured work by following links from list pages into detail pages, pairing each result card with the information on its article or listing so research tasks that would normally take hours finish in one run. AI can also summarize, categorize, translate, or reformat data during extraction, and results export to Google Sheets, Airtable, Notion, Excel, CSV, or through the Web Scraper API.

The product is positioned mainly for sales, real estate, operations, and marketing teams. Typical uses include scraping contact information and turning directories into lead lists, tracking buying signals like hiring or funding changes, aggregating property listings, monitoring competitor prices and SKUs, watching stock availability, and gathering reviews for sentiment analysis. Pricing is freemium: a free-forever tier with limited credits, then Starter, Professional, and Business plans that scale credits and add priority support, with an API and custom enterprise terms available.

**Pricing & Plans:** Freemium. A free-forever plan provides a limited monthly credit allowance, and paid Starter, Professional, and Business plans scale credits and features (yearly billing saves around 20% with credits upfront). A Web Scraper API is available for developer integration, and Business offers custom credits, custom limits, and priority support at custom pricing.

- **One-click AI extraction:** Open a page, click extract, and AI proposes the fields worth capturing and returns structured rows — no CSS selectors or drag-and-drop setup.
- **Pre-built site templates:** For popular sites like Amazon, eBay, and Google Maps, pre-built templates return consistent fields instantly without spending AI credits.
- **Agent mode with linked pages:** Thunderbit can open linked pages and pull details from them, so a results list and its detail pages become a single table in one run.
- **AI data shaping:** Summarize, categorize, translate, reformat, or calculate fields as part of the scrape, so exports arrive ready to use.
- **Direct exports and API:** Send results directly to Google Sheets, Airtable, or Notion, export to Excel or CSV, or connect via the Web Scraper API for developer workflows.

**Strengths:** Works without CSS selectors or coding knowledge; Pre-built templates for popular sites save AI credits; Agent mode follows linked pages for deeper enrichment; Exports directly to Sheets, Airtable, Notion, Excel, and CSV

**Limitations:** Fully free usage is limited by monthly AI credits; Scraping some sites can be affected by anti-bot measures or site terms; AI field suggestions occasionally need refinement for complex or unusual page layouts; Best experience requires the Chrome/Edge extension rather than a fully browser-free workflow

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

## Frequently Asked Questions

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

BlockSurvey has 302,480 monthly visits, while Thunderbit has 391,726. 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%; Thunderbit has -21.9%.

### 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. Thunderbit: Freemium, Contact for Pricing. Freemium. A free-forever plan provides a limited monthly credit allowance, and paid Starter, Professional, and Business plans scale credits and features (yearly billing saves around 20% with credits upfront). A Web Scraper API is available for developer integration, and Business offers custom credits, custom limits, and priority support at custom pricing.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Apify](https://openaitools.app/tool/apify) | 4,147,762 | +3.9% | Freemium, Contact for Pricing | A powerful cloud scraping marketplace, but lacks Thunderbit's instant natural-language browser extension scraping experience. | [.md](https://openaitools.app/tool/apify.md) |
| 2 | [Fillout](https://openaitools.app/tool/fillout-com) | 3,923,917 | -9.7% | Freemium | More advanced layout customization and database integrations, but lacks client-side end-to-end data encryption features. | [.md](https://openaitools.app/tool/fillout-com.md) |
| 3 | [forms.app](https://openaitools.app/tool/forms-app) | 987,157 | -11.2% | Freemium, Paid | Broader template library and poll features, but lacks specialized privacy-first cryptographic encryption for sensitive survey responses. | [.md](https://openaitools.app/tool/forms-app.md) |
| 4 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | Offers robust browser automation and AI data extraction, but focuses more broadly on general web assistance. | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 5 | [PhantomBuster](https://openaitools.app/tool/phantombuster) | 279,012 | -10.1% | Freemium, Free Trial, Paid | Cloud-based lead generation and scraping automation, but lacks an interactive browser extension agent interface. | [.md](https://openaitools.app/tool/phantombuster.md) |
| 6 | [Octoparse](https://openaitools.app/tool/octoparse) | 184,251 | +1.2% | Freemium, Free Trial, Paid, Contact for Pricing | A desktop visual scraping tool rather than a browser extension, offering heavier-duty scraping capabilities for large sites. | [.md](https://openaitools.app/tool/octoparse.md) |
| 7 | [Bardeen](https://openaitools.app/tool/bardeen) | 170,275 | -6.7% | Freemium, Free Trial, Paid, Contact for Pricing | Combines web scraping with browser automation and CRM syncing, but has a steeper workflow setup curve. | [.md](https://openaitools.app/tool/bardeen.md) |
| 8 | [Makeform](https://openaitools.app/tool/makeform) | 160,692 | -10.8% | Freemium | Faster AI form and logic generation from text prompts, but without client-side end-to-end encryption. | [.md](https://openaitools.app/tool/makeform.md) |
| 9 | [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) |
| 10 | [FormHug](https://openaitools.app/tool/formhug) | 92,118 | -4.8% | Freemium, Free | Supports unique MCP server integrations for AI form generation, but lacks BlockSurvey's strict cryptographic privacy focus. | [.md](https://openaitools.app/tool/formhug.md) |

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

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)