Privacy Policy

1. Introduction

ExpressSheet LLC ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our website and services (collectively, the "Service").

By using ExpressSheet, you agree to the collection and use of information in accordance with this policy. If you do not agree with our policies and practices, please do not use our Service.

2. Information We Collect

2.1 Personal Information

We collect information that you provide directly to us:

• Account Information: Name, email address, username, and password
• Payment Information: Billing address and payment details (processed securely through Stripe)
• Profile Information: Optional information you choose to provide
• Communication Data: Information from your correspondence with our support team

2.2 Usage Information

We automatically collect information about your use of the Service:

• Spreadsheet Data: Files you upload and analyze (temporarily processed, not permanently stored unless you save)
• Generated Content: Formulas, analyses, and visualizations you create
• Usage Patterns: Features used, frequency of use, and time spent
• Device Information: Browser type, operating system, IP address
• Log Data: Access times, pages viewed, and errors encountered

2.3 Google Sheets Integration

If you connect your Google account, we collect OAuth tokens to access your Google Sheets on your behalf. We only access sheets you explicitly choose to analyze and do not access other Google account data.

3. How We Use Your Information

We use the information we collect to:

• Provide, maintain, and improve our Service
• Process your transactions and manage your subscription
• Generate AI-powered formulas and analyses based on your requests
• Send you technical notices, updates, and support messages
• Respond to your comments, questions, and customer service requests
• Monitor and analyze usage patterns to improve user experience
• Detect, prevent, and address technical issues and security threats
• Comply with legal obligations and enforce our Terms of Service

4. How We Share Your Information

We do not sell your personal information. We may share your information only in the following circumstances:

4.1 Service Providers

We share information with third-party service providers who perform services on our behalf:

• Payment Processing: Stripe for secure payment processing
• AI Services: DeepSeek, SiliconFlow, and Volcengine for AI-powered formula generation
• Cloud Infrastructure: Hosting providers for data storage and processing
• Email Services: Email delivery providers for transactional emails

4.2 Legal Requirements

We may disclose your information if required by law or in response to valid requests by public authorities, such as a court order or subpoena.

4.3 Business Transfers

If ExpressSheet is involved in a merger, acquisition, or sale of assets, your information may be transferred as part of that transaction.

5. Data Security

We implement industry-standard security measures to protect your information:

• Encryption of data in transit using TLS/SSL
• Encryption of sensitive data at rest
• Secure authentication and password hashing
• Regular security audits and monitoring
• Restricted access to personal information on a need-to-know basis

While we strive to protect your information, no method of transmission over the internet or electronic storage is 100% secure. We cannot guarantee absolute security.

6. Data Retention

We retain your information for as long as necessary to:

• Provide our Service and fulfill your requests
• Comply with legal obligations
• Resolve disputes and enforce our agreements

Uploaded spreadsheet files are processed temporarily and automatically deleted after analysis unless you explicitly save them. Formula history and generated content are retained as part of your account data.

7. Your Privacy Rights

Depending on your location, you may have the following rights:

• Access: Request a copy of the personal information we hold about you
• Correction: Request correction of inaccurate or incomplete information
• Deletion: Request deletion of your personal information
• Portability: Request transfer of your data to another service
• Objection: Object to certain processing of your information
• Restriction: Request restriction of processing in certain circumstances

To exercise these rights, please contact us at support@expresssheet.com. We will respond to your request within 30 days.

8. Cookies and Tracking Technologies

We use cookies and similar tracking technologies to:

• Maintain your login session
• Remember your preferences
• Analyze usage patterns and improve our Service
• Provide security features

You can control cookies through your browser settings. However, disabling cookies may limit your ability to use certain features of our Service.

9. Third-Party Links and Services

Our Service may contain links to third-party websites or services (such as Google Sheets). We are not responsible for the privacy practices of these third parties. We encourage you to read their privacy policies before providing any information.

10. Children's Privacy

Our Service is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you believe we have collected information from a child under 13, please contact us immediately, and we will delete such information.

11. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. These countries may have different data protection laws. By using our Service, you consent to the transfer of your information to the United States and other countries where we operate.

12. California Privacy Rights (CCPA)

If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA):

• Right to know what personal information we collect and how it's used
• Right to delete your personal information
• Right to opt-out of the sale of personal information (we do not sell personal information)
• Right to non-discrimination for exercising your privacy rights

13. European Privacy Rights (GDPR)

If you are located in the European Economic Area (EEA), you have rights under the General Data Protection Regulation (GDPR), including the rights mentioned in Section 7 above. We process your data based on your consent, contractual necessity, or our legitimate interests.

14. Changes to This Privacy Policy

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

15. Contact Us

If you have any questions about this Privacy Policy or our privacy practices, please contact us at: