Privacy Policy
Last updated: July 28, 2026
Carton Calculator ("we", "our", or "the Service") values your privacy.
This Privacy Policy explains how we collect, use, and protect your personal information.
1. Information We Collect
When you use the Service, we may collect the following information:
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Account Information: The email address and encrypted password you provide during registration.
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Usage Data: Product dimensions, carton quantities, and other calculation data you enter (stored locally in your browser only).
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Subscription Information: Free trial status, paid subscription expiration date, and other service status data associated with your account.
2. How We Use Your Information
- To provide and manage your account and subscription services.
- To verify your identity for system login.
- To determine your trial period and paid subscription status.
- To improve and optimize our service experience.
3. Data Storage & Security
- Account authentication information is securely stored via Supabase with industry-standard encryption.
- Calculation data (product dimensions, carton quantities, etc.) is stored only in your browser's local storage (localStorage) and is never uploaded to any server.
- We implement reasonable technical measures to protect your personal information from unauthorized access, use, or disclosure.
4. Data Sharing & Disclosure
We do not sell, trade, or otherwise transfer your personal information to third parties, except in the following circumstances:
- With your explicit consent.
- When required by applicable law, regulation, or judicial process.
- Payment processing is independently handled by third-party payment platforms (e.g., Creem). Please refer to their respective privacy policies for details.
5. Your Rights
You have the right to:
- Access, correct, or delete your account information.
- Stop using the Service at any time and request deletion of your account.
- Clear locally stored calculation data via your browser settings.
6. Cookies & Local Storage
The Service uses your browser's localStorage to store login status and calculation data.
This data exists solely on your device and is never transmitted over the network.
You may clear this data at any time through your browser settings.
7. Policy Updates
We may update this Privacy Policy from time to time. The updated policy will be posted on this page
with a revised effective date. We encourage you to review this page periodically for the latest information.
8. Contact Us
If you have any questions about this Privacy Policy, please contact us at:
Email: support@example.com