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Privacy Policy

Last updated: January 7, 2026

Cost Signal ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our service.

1. Information We Collect

Account Information

  • Email address (required for account creation)
  • Name (optional)
  • Password (hashed and encrypted)

Usage Data

  • Push notification subscription data (for weekly alerts)
  • Subscription status and payment information (processed by Paddle)

Technical Data

  • Error logs and performance data (via Sentry, anonymized)
  • Browser type and device information

2. How We Use Your Information

  • To provide and maintain our service
  • To send you weekly economic signal notifications (if subscribed)
  • To process payments and manage subscriptions
  • To improve our service and fix technical issues
  • To communicate with you about your account

3. Data Storage and Security

Your data is stored securely using Supabase, a trusted cloud database service. We implement industry-standard security measures including:

  • Password encryption (bcrypt hashing)
  • Secure HTTPS connections
  • Regular security updates
  • Access controls and authentication

4. Third-Party Services

Paddle

We use Paddle for payment processing. Paddle handles all payment data according to their privacy policy. We do not store credit card information.

Sentry

We use Sentry for error tracking and performance monitoring. Data is anonymized and used only for technical improvements.

Google OAuth

If you sign in with Google, Google handles authentication according to their privacy policy. We only receive your email and name.

5. Your Rights

  • Access: You can view your account information at any time
  • Update: You can update your profile information in account settings
  • Delete: You can delete your account at any time (contact support)
  • Unsubscribe: You can disable push notifications at any time
  • Cancel: You can cancel your subscription at any time

6. Cookies and Tracking

We use session cookies for authentication only. We do not use tracking cookies or third-party analytics. We do not sell your data to advertisers.

7. Children's Privacy

Our service is not intended for children under 13. We do not knowingly collect information from children.

8. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new policy on this page and updating the "Last updated" date.

9. Contact Us

If you have questions about this Privacy Policy, please contact us through your account settings or email support.