Last updated: February 2026
Introduction
Lenz (“we”, “us”, or “our”) is a fact-checking service that uses AI, available at lenz.io. This Privacy Policy explains what information we collect, how we use it, and your choices regarding your data.
Information We Collect
Account information
When you create an account (directly or via Google sign-in) we store your email address and display name. If you sign in with Google, we receive your basic profile information (name, email, and profile picture URL) as authorized by you through Google’s OAuth consent screen.
Claim data
When you submit a claim for fact-checking, we store the text you provide and the analysis results generated by our analysis pipeline. If you choose to add a claim result to the Library, it becomes publicly visible.
Usage data
We collect basic usage information such as page views, votes, and interaction patterns to improve the service. We use cookies to maintain your session and remember your authentication state.
Payment information
Payments are processed by Stripe. We do not store your credit card details. Stripe may collect information necessary to process your transaction in accordance with their own privacy policy.
Contact form
If you contact us through our contact form, we store your email address, subject, and message to respond to your inquiry.
How We Use Your Information
- To provide and operate the fact-checking service
- To authenticate your account and manage your session
- To process payments and manage subscriptions
- To respond to your inquiries and support requests
- To improve and optimize the service
- To detect and prevent abuse or misuse
Data Sharing
We do not sell your personal information. We share data only with:
- AI model providers (e.g., Google Gemini) — the claim text you submit is sent to third-party AI models for analysis. These providers may have their own data retention policies.
- Stripe — for payment processing.
- Sentry — for error monitoring and service reliability.
- Google Analytics — for anonymous usage analytics (page views, interactions). Google may process this data in accordance with their privacy policy.
- Google Cloud — our infrastructure provider.
Claims in the Library
When you add a claim result to the Library, the claim text, analysis, score, and conclusion become publicly visible. Claims in the Library are completely anonymous — no personal information such as your name, email address, or account details is shared with other users or displayed alongside the claim. There is no way for other users to identify who submitted or added a particular claim. You can remove a claim from the Library at any time.
Data Retention & Deletion
You can delete individual claims from your history at any time. If you wish to delete your account and all associated data, please contact us at our contact page.
Cookies
We use essential cookies to maintain your authenticated session
and CSRF protection. We also use Google Analytics to improve users’ experience, which sets
first-party cookies (e.g. _ga) to
collect anonymous usage statistics such as page views and
interactions. We do not use third-party advertising cookies.
Children’s Privacy
Lenz is not intended for use by children under 13. We do not knowingly collect personal information from children.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify users of significant changes by posting a notice on the site. Continued use of the service after changes constitutes acceptance of the updated policy.
Contact Us
If you have questions about this Privacy Policy or wish to exercise your data rights, please reach out through our contact page.