Privacy Policy

1. Information We Collect

When you use QR Engine, we may collect the following information:

• Account information — name, email address, and profile picture when you sign in with Google or create an account with email and password.
• QR code data — the content you encode into QR codes (URLs, text, WiFi credentials, etc.) when you are signed in.
• Usage data — number of QR codes generated per day, export history, and subscription status.
• Payment information — processed securely by Stripe. We do not store your card details.
• Analytics data — page views and usage patterns collected via Google Analytics.

2. How We Use Your Information

• To provide and operate the QR Engine service
• To enforce daily usage limits on the free plan
• To process payments and manage subscriptions
• To improve the service and user experience
• To send essential service emails (e.g. payment receipts)

3. Third-Party Services

We use the following third-party services:

• Google OAuth — for sign-in authentication
• Stripe — for payment processing
• Google Analytics — for usage analytics
• Google AdSense — for serving ads to free plan users
• Neon — for database hosting
• Upstash Redis — for storing shared QR code links

4. Cookies

We use cookies to maintain your login session. Google Analytics and Google AdSense may also set cookies for analytics and advertising purposes. You can disable cookies in your browser settings, though some features may not work correctly.

5. Data Retention

Your account data is retained as long as your account is active. Shared QR code links stored in Redis expire after 30 days. You may request deletion of your account and data by contacting us.

6. Your Rights

You have the right to access, correct, or delete your personal data. To make a request, contact us at the email below.

7. Contact

If you have any questions about this Privacy Policy, please contact us at [email protected].