Zero Calendar

Terms of Service

Last updated: May 28, 2025

1. Acceptance of Terms

By accessing or using Zero Calendar (the "Service"), you agree to be bound by these Terms of Service ("Terms") and our Privacy Policy. If you do not agree to these Terms, do not use the Service. The Service is provided by the maintainers of the Zero Calendar open-source project ("we", "us", or "our").

2. Description of Service

Zero Calendar is an AI-powered calendar assistant designed to help you manage your schedule. Key features include:

  • Calendar event creation, modification, and viewing.
  • Integration with Google Calendar for bidirectional event synchronization.
  • An AI assistant ("Zero") that processes natural language queries to manage your calendar, powered by Groq Inc.'s API.
  • User authentication via Google Sign-In.
  • Secure storage of calendar data and user information using Upstash Redis.

3. Open Source License

The Zero Calendar software is licensed under the GNU General Public License v3.0 (GPL v3). The source code is publicly available on GitHub at github.com/Zero-Calendar/zero-calendar. Your use of the software component of the Service is subject to the terms of the GPL v3. These Terms of Service govern your use of the hosted service.

4. User Accounts and Responsibilities

To use the Service, you must authenticate using your Google account. By using the Service, you agree to:

  • Provide accurate information as provided by your Google account.
  • Maintain the security of your Google account credentials, as they are used to access the Service.
  • Be solely responsible for all activities that occur under your account.
  • Notify us immediately if you suspect any unauthorized use of your account or any other breach of security by contacting us via our GitHub issues page.

5. Acceptable Use Policy

You agree not to use the Service for any purpose that is unlawful or prohibited by these Terms. You specifically agree not to:

  • Engage in any activity that disrupts, interferes with, or harms the Service, its servers, or networks.
  • Attempt to gain unauthorized access to any part of the Service or its related systems.
  • Use the Service to store or transmit infringing, libelous, or otherwise unlawful or tortious material, or to store or transmit material in violation of third-party privacy rights.
  • Upload or transmit viruses, worms, or any other malicious code.
  • Use the AI assistant for purposes other than managing your calendar or for making inappropriate, abusive, or excessively frequent requests.
  • Violate any applicable local, state, national, or international law or regulation.

6. AI Assistant (Zero)

The AI assistant "Zero" utilizes Groq Inc.'s language models to process your calendar-related requests. While we strive for accuracy, AI responses may occasionally be incorrect or incomplete. You should verify critical information. Your interactions with Zero are processed by Groq, and their handling of data is subject to Groq's policies.

7. Google Calendar Integration

If you connect your Google Calendar, you authorize the Service to access, read, create, modify, and delete events in your Google Calendar to perform synchronization. Your use of Google Calendar is subject to Google's Terms of Service and Privacy Policy. You can revoke our access to your Google Calendar at any time via your Google account settings.

8. Data Privacy

Our collection and use of your Personal Information is described in our Privacy Policy, which is incorporated by reference into these Terms. Please review it carefully.

9. Service Availability and Modifications

We will make reasonable efforts to keep the Service operational. However, scheduled maintenance, unscheduled emergency maintenance, or failures of third-party providers may result in temporary unavailability. We reserve the right to modify or discontinue, temporarily or permanently, the Service (or any part thereof) with or without notice.

10. Disclaimer of Warranties

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT ANY WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AND ANY WARRANTIES ARISING OUT OF COURSE OF DEALING OR USAGE OF TRADE. WE DO NOT WARRANT THAT THE SERVICE WILL BE UNINTERRUPTED, SECURE, OR ERROR-FREE, OR THAT DEFECTS WILL BE CORRECTED.

11. Limitation of Liability

TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL WE, OUR AFFILIATES, DIRECTORS, EMPLOYEES, AGENTS, OR LICENSORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, PUNITIVE, OR EXEMPLARY DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS, GOODWILL, USE, DATA, OR OTHER INTANGIBLE LOSSES (EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES), ARISING OUT OF OR RELATING TO YOUR ACCESS TO OR USE OF, OR YOUR INABILITY TO ACCESS OR USE, THE SERVICE OR ANY CONTENT OR SERVICES THEREIN.

OUR TOTAL CUMULATIVE LIABILITY TO YOU FOR ALL CLAIMS ARISING FROM OR RELATING TO THE SERVICE, REGARDLESS OF THE FORM OF ACTION, IS LIMITED TO USD $1.00 (ONE UNITED STATES DOLLAR).

12. Indemnification

You agree to defend, indemnify, and hold harmless us, our affiliates, and our respective officers, directors, employees, and agents, from and against any claims, liabilities, damages, losses, and expenses, including, without limitation, reasonable legal and accounting fees, arising out of or in any way connected with (i) your access to or use of the Service; (ii) your violation of these Terms; or (iii) your violation of any third-party right, including without limitation any intellectual property right or privacy right.

13. Termination

You may terminate your use of the Service at any time by discontinuing use and, if applicable, deleting your account or revoking Google access. We reserve the right to suspend or terminate your access to the Service at our sole discretion, without notice, for conduct that we believe violates these Terms or is otherwise harmful to other users of the Service, us, or third parties, or for any other reason.

Upon termination, your right to use the Service will immediately cease. Data will be handled as described in our Privacy Policy.

14. Governing Law

These Terms shall be governed by and construed in accordance with the laws of [Insert Jurisdiction, e.g., the State of California, USA], without regard to its conflict of law principles. You agree to submit to the personal and exclusive jurisdiction of the courts located within [Insert Jurisdiction] for the resolution of any disputes.

Note: As an open-source project without a formal legal entity, specifying a jurisdiction can be complex. Users should be aware of this. For a deployed service, a clear jurisdiction of the entity operating the service is necessary.

15. Changes to These Terms

We reserve the right, at our sole discretion, to modify or replace these Terms at any time. If a revision is material, we will make reasonable efforts to provide at least 30 days' notice prior to any new terms taking effect, for example, by posting a notice on our website or through the Service. What constitutes a material change will be determined at our sole discretion. By continuing to access or use our Service after those revisions become effective, you agree to be bound by the revised terms.

16. Contact Information

If you have any questions about these Terms, please contact us at [email protected].