Privacy Policy

Last updated: September 21, 2025

Our commitment: We collect only what we need to provide our service. Your portfolio data stays in your Google Sheets™. We never sell your data to anyone.

In this policy, we explain what data we collect and why, how your data is handled, and your rights regarding your information. This policy applies to DeFiSheets, a Google Sheets™ add-on for cryptocurrency portfolio tracking.

For your convenience, here are quick links to each section:

What we collect and why

Our guiding principle is to collect only what we need to provide DeFiSheets functionality. Here's what that means:

Google Account Information

When you install DeFiSheets, we access your Google account information including your email address and basic profile information. This allows us to authenticate you and provide the add-on functionality within Google Sheets™.

Google Sheets™ Access

DeFiSheets requires permission to read and write data in your Google Sheets™. This is essential for our core functionality - fetching crypto prices and updating your portfolio calculations. Your spreadsheet data remains in your Google account and is not stored on our servers.

Cryptocurrency Data Requests

When you use DeFiSheets functions, we make requests to cryptocurrency price APIs on your behalf. We temporarily process this data to return current prices and market information to your spreadsheet, but we don't store your specific cryptocurrency holdings or portfolio details.

Usage Analytics

We collect basic usage analytics such as which functions are used most frequently and general error logs. This helps us improve the add-on and fix bugs. This data is aggregated and doesn't include your specific portfolio information.

How we use your information

To provide the service

We use your Google account access to authenticate you and provide DeFiSheets functionality within Google Sheets™. We use third-party cryptocurrency APIs to fetch real-time price data when you request it.

To improve our service

We analyze usage patterns and error logs to identify areas for improvement, fix bugs, and develop new features. This analysis uses aggregated, anonymized data.

To communicate with you

We may use your email address to send important service updates, security notices, or information about new features. We won't send marketing emails without your explicit consent.

Important: We never access, store, or analyze your specific cryptocurrency holdings, portfolio values, or trading strategies. Your financial data stays private in your Google Sheets™.

How we secure your data

Security is paramount when dealing with financial information, even indirectly:

  • Encrypted connections: All data transmission between DeFiSheets and external services uses SSL/TLS encryption
  • Minimal data storage: We store only essential authentication tokens and usage analytics, not your portfolio data
  • Secure APIs: We only integrate with reputable cryptocurrency data providers with strong security practices
  • Google's security: Your portfolio data benefits from Google's enterprise-grade security since it remains in your Google Sheets™

Your rights with respect to your information

You have several rights regarding your personal information:

  • Right to access: You can request information about what personal data we have about you
  • Right to correction: You can request that we correct any inaccurate personal information
  • Right to deletion: You can request that we delete your personal information
  • Right to data portability: Your portfolio data is already in your Google Sheets™ and fully portable
  • Right to withdraw consent: You can revoke DeFiSheets' access to your Google account at any time through your Google account settings

To exercise these rights, you can contact us or simply remove the DeFiSheets add-on from your Google account, which will immediately revoke our access.

Data retention

We retain different types of data for different periods:

  • Authentication data: Kept while you have DeFiSheets installed and for up to 30 days after removal
  • Usage analytics: Aggregated data may be retained indefinitely for service improvement
  • Error logs: Kept for up to 90 days for debugging purposes
  • Your portfolio data: Always remains in your Google Sheets™ under your control

Third-party services

DeFiSheets integrates with several third-party services:

  • Google Workspace: For add-on functionality and authentication
  • Cryptocurrency APIs: For real-time price data (such as CoinGecko, CoinMarketCap)
  • Analytics services: For understanding usage patterns and improving our service

These services have their own privacy policies, and we encourage you to review them.

When we might disclose information

We may disclose your information in limited circumstances:

  • Legal requirements: If required by law, court order, or regulatory authority
  • Security threats: To investigate or prevent fraud, security threats, or abuse
  • Business transfer: If DeFiSheets is acquired, sold, or merged (users would be notified in advance)

We will never sell your personal information to advertisers or data brokers.

International users

DeFiSheets is operated from the United States. If you're using our service from outside the US, your information may be transferred to and processed in the United States. We take appropriate measures to ensure your data is protected according to applicable privacy laws.

Changes to this policy

We may update this privacy policy from time to time to reflect changes in our practices or for legal compliance. We'll notify users of significant changes by updating the date at the top of this policy and, for material changes, by sending a notification through the add-on or via email.

Contact us

If you have questions about this privacy policy or how we handle your data, please contact us through our support channels or by creating an issue in our documentation.

Remember: You can always remove DeFiSheets from your Google account at any time through your Google Workspace add-ons settings, which will immediately revoke our access to your account.