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.
Privacy-first AI surveys with end-to-end encrypted responses
Agentic web scraper that turns any page into ready-to-use data
| Dimension / Metric | ||
|---|---|---|
| Official Domain | blocksurvey.io | thunderbit.com |
| Pricing Model | Freemium, Paid | Freemium, Contact for Pricing |
| Monthly Visits | 302.48K (302,480) | 391.73K (391,726) |
| MoM Traffic Delta | -52.92K (-14.9%) | -110.09K (-21.9%) |
| Primary Market & Share | 🇺🇸 United States (25.1%) | 🇺🇸 United States (9.9%) |
| Direct Visits / mo | 259.19K | 80.22K |
| User Rating | 4.2 | 4.4 |
| Supported Platforms | Website | Website |
Privacy-first AI surveys with end-to-end encrypted responses
Responses are encrypted on the respondent's device before upload, so only the survey owner holds the key and can decrypt the data.
Generate structured, less biased questionnaires from a prompt, refine wording, create answer options and add skip logic and multilingual support.
Automated thematic analysis, sentiment detection, anomaly flagging and data encoding turn open-ended answers into usable categorical insight.
Run natural back-and-forth interviews with dynamic follow-up questions that adapt to each respondent for deeper qualitative data.
Agentic web scraper that turns any page into ready-to-use data
Open a page, click extract, and AI proposes the fields worth capturing and returns structured rows — no CSS selectors or drag-and-drop setup.
For popular sites like Amazon, eBay, and Google Maps, pre-built templates return consistent fields instantly without spending AI credits.
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.
Summarize, categorize, translate, reformat, or calculate fields as part of the scrape, so exports arrive ready to use.
SpecialistA powerful cloud scraping marketplace, but lacks Thunderbit's instant natural-language browser extension scraping experience.
SpecialistA powerful cloud scraping marketplace, but lacks Thunderbit's instant natural-language browser extension scraping experience.
More advanced layout customization and database integrations, but lacks client-side end-to-end data encryption features.
Broader template library and poll features, but lacks specialized privacy-first cryptographic encryption for sensitive survey responses.
Offers robust browser automation and AI data extraction, but focuses more broadly on general web assistance.
SpecialistCloud-based lead generation and scraping automation, but lacks an interactive browser extension agent interface.
SpecialistCloud-based lead generation and scraping automation, but lacks an interactive browser extension agent interface.
SpecialistA desktop visual scraping tool rather than a browser extension, offering heavier-duty scraping capabilities for large sites.
SpecialistA desktop visual scraping tool rather than a browser extension, offering heavier-duty scraping capabilities for large sites.
Combines web scraping with browser automation and CRM syncing, but has a steeper workflow setup curve.
Combines web scraping with browser automation and CRM syncing, but has a steeper workflow setup curve.
Faster AI form and logic generation from text prompts, but without client-side end-to-end encryption.
Better interactive quizzes and lead capture polls, but less focused on secure research surveys and data privacy.
Better interactive quizzes and lead capture polls, but less focused on secure research surveys and data privacy.
Supports unique MCP server integrations for AI form generation, but lacks BlockSurvey's strict cryptographic privacy focus.
Free / Open-sourceOpen-source codebase with unlimited submissions and AI assistance, but less emphasis on end-to-end encrypted data storage.
SpecialistTurn static forms into adaptive AI conversations with structured output
SpecialistTurn static forms into adaptive AI conversations with structured output
