More advanced layout customization and database integrations, but lacks client-side end-to-end data encryption features.
BlockSurvey records 302,480 monthly visits with -14.9% month-over-month growth and Freemium, Paid pricing. ComplyCube records 85,685 monthly visits with +39.6% growth and Contact for Pricing pricing.

Identity verification, KYC, KYB and AML compliance in one platform
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | blocksurvey.io | complycube.com |
| Pricing Model | Freemium, Paid | Contact for Pricing |
| Monthly Visits | 302.48K (302,480) | 85.69K (85,685) |
| MoM Traffic Delta | -52.92K (-14.9%) | +24.32K (+39.6%) |
| Primary Market & Share | 🇺🇸 United States (25.1%) | 🇺🇸 United States (9%) |
| Direct Visits / mo | 259.19K | 35.28K |
| User Rating | 4.2 | 4.3 |
| 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.

Identity verification, KYC, KYB and AML compliance in one platform
Authenticate passports, national identity cards and driving licences, then confirm ownership with a selfie-to-document biometric match.
Screen customers against sanctions, politically exposed persons, adverse media and watchlists, and keep monitoring after onboarding rather than only at sign-up.
Run know-your-business and customer due diligence checks, verify addresses, and corroborate provided details against authoritative bureau sources.
Assign risk levels to customers and let compliance teams review, annotate and resolve flagged cases through no-code workflows.
More advanced layout customization and database integrations, but lacks client-side end-to-end data encryption features.

Free / Open-sourceAI reverse image search with face, place, and duplicate detection
Free / Open-sourceAI reverse image search with face, place, and duplicate detection
Broader template library and poll features, but lacks specialized privacy-first cryptographic encryption for sensitive survey responses.
Free / Open-sourceUpload one photo and find where that face appears across social media and the web
Free / Open-sourceUpload one photo and find where that face appears across social media and the web

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.

Global identity verification, KYC/AML compliance and fraud prevention
Global identity verification, KYC/AML compliance and fraud prevention

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.

AI-powered ID scanning, authentication and identity proofing
AI-powered ID scanning, authentication and identity proofing

SpecialistTurn static forms into adaptive AI conversations with structured output
SpecialistTurn static forms into adaptive AI conversations with structured output

Liveness and deepfake detection for identity verification