Zero: Privacy Policy

Last Updated: Jun. 13, 2025

Overview

Zero is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our task management application on iOS and macOS devices.

Information We Collect

Information You Provide

  • Account Information: When you create an account, we collect your email address and display name

  • Authentication Data: We store authentication credentials provided by third-party sign-in services (Google Sign-In, Sign in with Apple)

  • User Content: Tasks, projects, lists, and any other content you create within the app

Information Collected Automatically

  • Usage Data: Basic analytics about app crashes and performance (via Firebase)

  • Device Information: Device type, operating system version, and unique device identifiers for sync purposes

Information from Third Parties

  • Authentication Providers: When you sign in with Google or Apple, we receive your email address and display name from these services

How We Use Your Information

We use the collected information to:

  • Provide and maintain the Zero service

  • Authenticate your account and enable secure access

  • Sync your data across your devices

  • Enable collaboration features when you share projects

  • Send project invitations to email addresses you provide

  • Improve app performance and fix bugs

  • Respond to support requests

Data Storage and Security

  • Cloud Storage: Your data is stored securely in Firebase Firestore with encryption at rest

  • Authentication: We use Firebase Authentication with industry-standard security measures

  • Keychain: Sensitive authentication tokens are stored in your device's secure keychain

  • Access Control: Your data is protected with user-specific security rules - only you can access your tasks and projects unless explicitly shared

Data Sharing

We do not sell, trade, or rent your personal information. We share your information only in these circumstances:

  • Shared Projects: When you invite someone to a project, they can see that project's title and tasks

  • Invitations: When you invite someone, we share your email and display name with the invitee

  • Service Providers: We use Google Firebase for authentication and data storage

  • Legal Requirements: If required by law or to protect our rights

Third-Party Services

Zero integrates with:

  • Firebase (Google): For authentication, data storage, and analytics

  • Google Sign-In: For authentication option

  • Sign in with Apple: For authentication option

These services have their own privacy policies governing their use of your information.

Data Retention

  • Active Accounts: We retain your data as long as your account is active

  • Deleted Data: When you delete tasks, projects, or lists, they are immediately removed from our servers

  • Account Deletion: You can request account deletion, which will permanently remove all your data

Your Rights

You have the right to:

  • Access your personal data

  • Correct inaccurate data

  • Delete your account and associated data

  • Export your data

  • Opt-out of any marketing communications (we don't currently send any)

Children's Privacy

Zero is not intended for children under 13. We do not knowingly collect information from children under 13. If we discover such information, we will promptly delete it.

Data Transfers

Your information may be transferred to and maintained on servers located outside of your jurisdiction. We ensure appropriate safeguards are in place for such transfers.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last Updated" date and, for significant changes, we may provide additional notice within the app.

Contact Us

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

otto@blind.com

California Privacy Rights

California residents have additional rights under the California Consumer Privacy Act (CCPA), including the right to know what personal information is collected, used, shared or sold.

European Privacy Rights

If you are in the European Economic Area (EEA), you have additional rights under the General Data Protection Regulation (GDPR), including the right to data portability and the right to lodge a complaint with a supervisory authority.

By using Zero, you agree to the collection and use of information in accordance with this Privacy Policy.