Privacy Policy

Last updated:

1. Introduction

GrayCalc ("Service", "we", "our", or "us") respects your privacy and is committed to protecting it through our compliance with this policy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use GrayCalc.

2. Information We Collect

We collect information necessary to operate the Service and improve your experience:

  • Account Data – your email address, used solely for authentication.
  • Sheet Content – calculations you save. These are private by default.
  • Usage & Device Data – we use third-party analytics tools to understand how our Service is used (e.g., button clicks, errors, performance).
  • Cookies – we use cookies and similar technologies to store your preferences and session status.

3. Cookies & Tracking Technologies

We use cookies (small text files stored on your device) to:

  • Keep you signed in.
  • Remember your preferences (e.g., theme, sidebar state).
  • Analyze how you interact with the Service to help us improve it.

You can control cookies through your browser settings, but disabling them may break core features like signing in.

4. Analytics

We use the following third-party processors to analyze Service usage. These services may collect data such as IP addresses, device types, and browsing behavior:

5. How We Use Your Information

  • To provide and maintain the Service.
  • To authenticate you.
  • To analyze usage patterns and fix bugs.

6. Legal Basis

We process your information pursuant to legitimate interests in running a secure online calculator and under your consent when you voluntarily create an account and store sheets.

5. Sharing & Disclosure

We do not sell your information. We may share limited data only with trusted sub-processors strictly necessary to operate GrayCalc (e.g., Cloudflare for hosting). All sub-processors are contractually bound by confidentiality and data-protection obligations.

6. Data Retention

Your sheets and account data are stored for as long as you maintain an account. You may delete a sheet at any time from within the app. You may also delete your entire account by contacting us at graycalc@gmail.com, which will remove all personally identifiable information within 30 days.

7. Security

We employ industry-standard measures such as encryption in transit (HTTPS) and at rest (database encryption provided by our cloud platform) to protect your data. No method of transmission or storage is 100% secure, and therefore we cannot guarantee absolute security.

8. Your Rights

Depending on your jurisdiction, you may have rights to access, correct, delete, or port your personal data, and to restrict or object to certain processing. To exercise any of these rights, email us at graycalc@gmail.com.

9. Children's Privacy

GrayCalc is not directed to children under 13. We do not knowingly collect personal information from children. If you believe we have inadvertently done so, please contact us so we can delete the information.

10. Changes to This Policy

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

11. Contact Us

If you have questions about this Privacy Policy, please contact us at graycalc@gmail.com.

For additional terms governing your use of the Service, please see our Terms of Service.