Privacy Policy

Last updated: June 2026

Who we are

Quill AI is operated by Asynchronous Studios, based in the United Kingdom. We provide an AI-powered blog writing tool at tryquillai.com.

If you have any questions about this policy or how we handle your data, contact us at asynchronousstudios@gmail.com.

What information we collect

Account information: When you create an account, we collect your email address and name via Clerk, our authentication provider.

Usage data: We store the number of posts you have generated and your credit balance in Upstash Redis.

Payment information: Payments are processed by Stripe. We do not store your card details — these are handled entirely by Stripe.

Analytics data: We use Google Analytics to collect anonymised data about how visitors use the site, including pages visited, time on site, and general location (country/city level).

Advertising data: We use Google AdSense to display advertising. AdSense may collect data about your browsing behaviour to serve relevant ads.

Cookies: We use cookies for authentication (Clerk), analytics (Google Analytics), and advertising (Google AdSense). We also store your dark mode preference in localStorage, which stays on your device and is not transmitted to us.

How we use your information

  • To provide the service — generating posts, tracking your credit balance, and processing payments
  • To communicate with you about your account or purchases
  • To improve the service using anonymised analytics data
  • To display relevant advertising through Google AdSense

Legal basis for processing (GDPR)

We process your data under the following legal bases:

  • Contract performance — processing your account data and payments to provide the service you have signed up for
  • Legitimate interests — using analytics to improve the service
  • Consent — advertising cookies, where your consent is required by law

Third-party services

We share data with the following third parties as necessary to provide the service:

  • Clerk — authentication and account management
  • Stripe — payment processing
  • Upstash — database (usage and credit data)
  • Anthropic — AI content generation (your topic is sent to Anthropic's API)
  • Vercel — website hosting
  • Google Analytics — anonymised usage analytics
  • Google AdSense — advertising

Each of these providers has their own privacy policy governing how they handle data.

Data retention

  • Account and usage data is retained while your account is active and deleted upon request
  • Payment records are retained for 7 years as required by UK tax law
  • Analytics data is retained according to Google Analytics default settings (26 months)

Your rights

Under UK GDPR, you have the right to:

  • Access the personal data we hold about you
  • Correct inaccurate data
  • Request deletion of your data
  • Receive your data in a portable format
  • Object to processing based on legitimate interests
  • Lodge a complaint with the Information Commissioner's Office (ICO) at ico.org.uk

To exercise any of these rights, email asynchronousstudios@gmail.com.

Children's privacy

Quill AI is not directed at children under 13. We do not knowingly collect data from children. If you believe a child has provided us with personal data, please contact us and we will delete it.

Changes to this policy

We may update this policy from time to time. We will notify registered users of significant changes by email. Continued use of the service after changes constitutes acceptance of the updated policy.