Terms of Use
Last updated: August 18, 2026
Agreement to terms
These Terms of Use (“Terms”) govern your access to and use of the QuakeWatch iOS application and related services (collectively, the “App”), provided by QuakeWatch (“we,” “us,” or “our”). By downloading, installing, or using the App, you agree to be bound by these Terms. If you do not agree, do not use the App.
Important: earthquake data limitations
QuakeWatch provides earthquake information, notifications, and related data for informational purposes only. Earthquakes are natural phenomena that current science cannot predict with certainty, and no seismic monitoring or alerting system — including QuakeWatch — can guarantee advance warning before an earthquake occurs or before shaking reaches any specific location.
- Alerts may be delayed, incomplete, inaccurate, or may not arrive at all due to network conditions, device settings, service outages, data source limitations, or factors outside our control.
- Reported magnitude, depth, distance, and intensity estimates are preliminary and may be revised as more data becomes available.
- QuakeWatch is not a substitute for official earthquake early warning systems, emergency alerts, or guidance issued by government agencies, geological surveys, or local emergency management authorities.
- You should always follow instructions from official emergency authorities and local safety guidance, and should not rely solely on QuakeWatch for life-safety decisions.
By using the App, you acknowledge and accept these limitations and agree that QuakeWatch is one informational resource among the precautions you should take, not a warning system you can rely on exclusively.
Eligibility and accounts
You must be able to form a binding contract to use the App and must comply with all applicable laws in your jurisdiction. If you create an account, you are responsible for maintaining the confidentiality of your credentials and for all activity under your account.
Subscriptions and purchases
QuakeWatch offers a free tier and an optional paid tier (“QuakeWatch Plus”) with additional features such as unlimited monitored locations. Subscriptions are billed through your Apple ID account in accordance with Apple’s App Store terms, and will automatically renew unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your iOS device’s Settings.
Acceptable use
You agree not to:
- Use the App for any unlawful purpose or in violation of these Terms;
- Attempt to interfere with, disrupt, or reverse-engineer the App or its underlying systems;
- Misrepresent your identity or your relationship to any other user when using family/friends features;
- Use the App to harass, stalk, or invade the privacy of another person;
- Access the App through automated means without our prior written consent.
Family & friends features
Location and status sharing with contacts you add is voluntary and requires mutual consent. You are responsible for only connecting with people who have agreed to share their information with you. You may remove a connection at any time to stop future sharing.
Third-party data sources
The App aggregates seismic data from third-party scientific networks and public agencies. We do not control the accuracy, completeness, or timeliness of this underlying data and are not responsible for errors originating from these third-party sources.
Disclaimer of warranties
THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE,” WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, OR THAT THE APP WILL BE ACCURATE, TIMELY, UNINTERRUPTED, OR ERROR-FREE. WE DO NOT WARRANT THAT THE APP WILL DETECT, PREDICT, OR PROVIDE ADVANCE WARNING OF ANY EARTHQUAKE OR SEISMIC EVENT.
Limitation of liability
TO THE FULLEST EXTENT PERMITTED BY LAW, QUAKEWATCH AND ITS AFFILIATES, OFFICERS, EMPLOYEES, AND AGENTS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF LIFE, PERSONAL INJURY, OR PROPERTY DAMAGE, ARISING FROM OR RELATED TO YOUR USE OF, OR INABILITY TO USE, THE APP — INCLUDING ANY DELAYED, MISSED, OR INACCURATE EARTHQUAKE ALERT — EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. NOTHING IN THESE TERMS LIMITS LIABILITY THAT CANNOT BE LIMITED UNDER APPLICABLE LAW.
Termination
We may suspend or terminate your access to the App at any time if you violate these Terms. You may stop using the App and delete your account at any time.
Changes to these terms
We may revise these Terms from time to time. If we make material changes, we will provide reasonable notice through the App or other means before the changes take effect. Continued use of the App after changes take effect constitutes acceptance of the revised Terms.
Governing law
These Terms are governed by the laws of the jurisdiction in which QuakeWatch is established, without regard to conflict-of-law principles, except where mandatory local consumer protection laws apply.
Contact us
Questions about these Terms can be sent through our support form. See also our Privacy Policy.