Privacy

In short

• You can use unslant without an account. With an account, we only ask for your email.
• What you send is used only to produce the analysis. We don’t sell data or use it for advertising.
• Account holders find their analyses in “My analyses” and can delete them, or the whole account, at any time.
• We don’t use tracking or advertising tools.

What happens to what you send

• Links: our server fetches the page, extracts the main text and some of the article’s images (charts, tables, captioned photos) and sends them for analysis.
• Texts and claims: are sent for analysis exactly as you typed or pasted them, together with any optional context you provide.
• PDFs: the file is read in your own browser and is not sent to our server in full. What is sent for analysis is the extracted text and images of the pages that contain figures, charts or tables (at most 20), so the AI can examine them.

The analysis is performed by AI from Anthropic, the company that develops the Claude models. The content is sent to Anthropic through its API and processed under Anthropic’s privacy policy and commercial terms. Under those terms, content sent by API customers is not used to train its models. Details at anthropic.com/legal/privacy.

For the “To balance your reading” section, the AI runs web searches on the topic of the text, using Anthropic’s search tool. The search terms are written by the AI based on the topic; they are not the full text you sent. Recommended links lead to third-party sites, which have their own privacy policies.

What we keep

• Account: your email, when the account was created and last used, and the time zone of your first use (the daily limit resets at its midnight). You sign in with a link sent to your email; we don’t store a password.
• My analyses (accounts only): the result of each analysis you run, with title, link, score and the analyzed text (the highlights point to it). They are kept until you delete them or delete your account.
• Daily usage: to enforce the daily limits, we record the day and the type of each analysis (simple or detailed). For visitors without an account, the record is tied to two anonymous codes: one derived from a cookie and one from the internet (IP) address. Both are irreversible digests: the database never receives the address itself. These records are deleted after 30 days.
• Reused results: when a text has already been analyzed, the same result is shown instantly to anyone who sends the same text again, at no cost and without using up the limit. For that, we keep the result (with the analyzed text) for up to 30 days, with no link to whoever sent it. So deleting an analysis from your account does not delete this anonymous copy, which expires on its own.
• Feedback: what you write in the “Send feedback” button, the page you were on and, if you provide it, your name or email. It is used only to improve the site and is deleted after 12 months.
• Technical logs: operation logs (for example, the type of error when an analysis fails) do not include the content you sent. The hosting provider may log technical access data, such as IP addresses, for a short period, for security and operation.

Where the data is stored

Accounts and the database are hosted by Supabase, on servers in the eastern United States. The analysis is performed by Anthropic, also in the United States. So if you are in Brazil or the United Kingdom, your data is transferred to the United States for the service to work. These companies process the data on our behalf and only for that purpose.

Cookies and browser storage

• Language: remembers the language you chose (Portuguese or English).
• Session: keeps you signed in to your account (only exists if you sign in).
• Visitor: a random code that counts the free analysis for people without an account. It contains no personal data and lasts up to 1 year.
• Analysis type: your browser remembers whether you prefer the simple or the detailed analysis. This choice stays on your device only.

None of them is used for advertising or to follow you on other sites.

Your rights

Under data protection laws (such as Brazil’s LGPD, the UK GDPR and California’s privacy laws), you can ask to access, correct, receive a copy of or delete your data. On the site itself, you can already view and delete your analyses in “My analyses” and delete your account, which also deletes all of its analyses (daily usage records remain, without your email, until they reach 30 days, so that deleting and re-creating an account does not reset the limit). For any other request, write to the contact email, which will be listed here.

Recommended care

Avoid sending texts containing sensitive personal data, yours or anyone else’s, such as ID documents, addresses, health information or private conversations. unslant is meant for analyzing public content or content of public interest.

Changes to this policy

When unslant introduces payments, or changes what we keep, this page will be updated before the change goes live.

Last updated: November 2026.