Privacy policy

What we collect

We collect only what the service needs to work.

• Account data: your email address, a display name, and, if you sign in with Google, the name and avatar Google shares.
• Usage data: your questions, the answers and their citations, your searches, and usage counters (questions, tokens, plan).
• Billing data: your plan, renewal dates and Stripe customer id. Card details never reach us; Stripe holds them.
• Technical data: IP address, browser type and timestamps in server logs, kept for security and abuse prevention.
• Preferences (paid plans): a short list of preferences drawn from your own messages — what you are working on, how you like answers, the topics and sources you prefer, and instructions you asked us to keep. You can see, edit and delete it on the Account page or switch it off; it is never shared and never used for anything but answering your own questions.

How we use it

To answer your questions and show your history; to run your plan and its limits; to send account emails (confirmation, sign-in links, receipts); to prevent abuse; to improve retrieval quality using aggregate, non-identifying statistics.

We do not sell personal data and we do not use your questions to train models.

Service providers

We rely on third-party providers for hosting, authentication, language models, web search, payment processing and email delivery. They process data only to provide those services to us, under their standard terms. Card details are handled by our payment processor and never reach our servers.

Retention

• Conversations and citations: until you delete them or your account.
• Search and usage logs: 90 days.
• Billing records: as long as tax law requires (typically 7 years), held by Stripe and in our ledger.
• After account deletion we keep a one-way hash of your email address so that the free trial cannot be claimed again; it cannot be turned back into your address.

Cookies and advertising

We set the cookies needed to keep you signed in and to remember interface preferences.

We also run Google Ads conversion tracking, which loads a Google script on every page and may set Google cookies. It tells us that someone who saw one of our ads went on to sign up; it is not used to build a profile of what you read here, and your questions, searches and documents are never sent to it. Google's own privacy policy governs what it does with what it collects.

We ask before setting them, and nothing is set until you say yes. You can change your mind at any time using the control at the end of this page, and you can block the tag with any content blocker or your browser's third-party cookie setting. The site works exactly the same either way.

Your rights

You can download everything we hold about you and delete your account at any time from the Account page. Deleting the account cancels any subscription and removes your data within 30 days, except billing records we must keep.

Residents of the European Economic Area, the United Kingdom, California and other jurisdictions with data protection laws have additional rights to access, correct, restrict or object; write to [email protected]. Our representative for the European Union and the United Kingdom under Article 27 of the GDPR and the UK GDPR is John P. Nolan, reachable through the same address.

Children

The service is for adults and students in higher education. We do not knowingly collect data from anyone under 16.

Changes and contact

We will announce material changes by email or on the site. Questions: [email protected].