BlockSurvey is an end-to-end encrypted survey platform with AI creation and analysis. Plans start at $39/month with a 14-day free trial.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
BlockSurvey is a survey and form platform designed around respondent privacy. According to its website, answers are encrypted on the respondent's device before they ever reach BlockSurvey, which means the account owner holds the only key. The company describes this as zero-knowledge privacy and says neither it nor anyone else can read the stored responses.
The product pairs that encryption with AI tools for building and analyzing surveys. It is aimed at teams that handle sensitive feedback, including healthcare providers, mental health practitioners, institutional researchers, SaaS product teams and non-profits. The site also lists no trackers, cookies or ads, and support for fully anonymous responses.
Users create a survey by writing it manually or by describing what they need to the AI, which drafts and structures the questions. They can add skip and display logic, multilingual versions, branding and different question types. The survey is then shared by link, QR code, embed, email campaign or SMS campaign, with automatic follow-ups available.
When respondents answer, their responses are encrypted on their own device and stored in encrypted form. The site says AI thematic analysis, sentiment analysis and response summaries work on data that stays encrypted. Results can then be synced to connected tools such as Google Sheets, Slack, HubSpot, Airtable or Power BI.
On the privacy side, BlockSurvey offers end-to-end encryption, anonymous collection and a stated absence of trackers and ads. The Activism solution page adds that Onion Routing is enabled to protect respondent identity. The Team plan lists GDPR compliance with a DPA issued and HIPAA compliance with a BAA issued, which matters for regulated work.
The AI layer is broad. It covers survey creation, conversational interviews, adaptive follow-up questions, rephrasing, option generation, bias spotting, thematic and sentiment analysis, anomaly detection and longitudinal comparison across survey waves. Question types include rank order, matrix tables, constant sum, file upload, NPS, loop and group questions, and A/B testing. A Survey MCP connects it to Claude, Claude Code and ChatGPT.
BlockSurvey is a survey and form platform focused on privacy. Responses are encrypted on the respondent's device so only the account owner can read them. It also offers AI tools for building surveys and analyzing results.
Standard is listed at $39 per month, Premium at $79 and Team at $119, with higher struck-through prices of $49, $99 and $149. A yearly toggle shows two months free. Enterprise pricing is available through a demo request.
Yes. The pricing page offers a 14-day free trial, and the site includes Try for free and Sign up for free buttons on each paid plan.
The Team plan lists GDPR compliance with a DPA issued and HIPAA compliance with a BAA issued. The site also promotes the product for healthcare surveys with end-to-end encryption.
The site names Slack, Google Sheets, Airtable, HubSpot, Zendesk, Power BI, Microsoft Excel and Discord. A Survey MCP also connects it to Claude, Claude Code and ChatGPT.
It suits researchers, healthcare and mental health practices, SaaS product teams and non-profits that collect sensitive feedback. Teams that need encrypted responses and AI analysis are the main fit.
Yes. The site lists email campaigns and SMS text campaigns, plus sharing by link, QR code or embed. The Team plan includes a Run a campaign feature.
Yes. Premium includes one custom domain, branding and removal of BlockSurvey branding, and Team includes three custom domains. White label is listed under Enterprise.