Terms of Service
Terms governing use of Hao Apps and zhihaol.eu.org.
These Terms of Service govern access to Hao Apps, zhihaol.eu.org, and related web-based tools that reference these terms.
1. Acceptance
By accessing or using a service covered by these terms, you agree to these Terms of Service. If you do not agree, do not use the service.
2. Services
Hao Apps includes web applications, research tools, informational products, and experimental software maintained by Zhihao LIU. Features may evolve over time as products are improved, simplified, or retired.
3. Accounts and sign-in
Some services offer account features through email or supported third-party identity providers such as Google, GitHub, X, or Apple. You are responsible for maintaining control of the email address or identity-provider account used to sign in and for activity performed through your authenticated session.
You must not attempt to access another user's account, bypass authentication or authorization controls, abuse invitation or entitlement mechanisms, or interfere with the security of the services.
4. Acceptable use
You may use the services for lawful personal, professional, research, or informational purposes. You may not:
- use the services in violation of applicable law or another person's rights;
- attempt unauthorized access to systems, data, accounts, or infrastructure;
- disrupt, overload, scrape abusively, or deliberately impair the services;
- use automated means to circumvent access controls or rate limits; or
- misrepresent the source, status, or capabilities of information generated by the services.
5. User content and data
You retain ownership of content and data that you create or provide, subject to any rights required for the service to store, process, display, or transmit that material at your direction. You are responsible for ensuring that you have the right to provide the material you submit.
6. Research, analytical, and financial information
Research, market, financial, investment, scientific, or analytical outputs are provided for informational and research purposes only unless a service explicitly states otherwise. They do not constitute personalized investment, financial, legal, engineering, regulatory, or other professional advice.
You remain responsible for verifying information and for decisions made using the services. Historical performance, model outputs, forecasts, rankings, and simulations do not guarantee future results.
7. Third-party services
Hao Apps may rely on or link to third-party services, including authentication providers, hosting platforms, data providers, analytics services, and external websites. Your use of those third-party services may also be governed by their own terms and privacy policies.
8. Availability and changes
The services are provided on an evolving basis. Features may be added, changed, suspended, or removed, and availability may occasionally be interrupted by maintenance, provider outages, or technical issues. No specific level of availability is guaranteed unless expressly agreed in writing.
9. Intellectual property
Unless otherwise stated, the software, design, original text, branding, and other original materials provided through Hao Apps remain the property of their respective rights holders. Open-source components and third-party materials remain subject to their own licenses.
10. Disclaimer of warranties
To the extent permitted by law, the services are provided on an “as is” and “as available” basis without warranties of uninterrupted operation, fitness for a particular purpose, accuracy, or error-free results.
11. Limitation of liability
To the extent permitted by applicable law, Hao Apps and its maintainer will not be liable for indirect, incidental, special, consequential, or similar losses arising from use of, or inability to use, the services. Nothing in these terms excludes liability that cannot lawfully be excluded.
12. Termination
You may stop using the services at any time. Access may be restricted or terminated where reasonably necessary to protect users, enforce these terms, comply with law, or prevent abuse of the services.
13. Changes to these terms
These terms may be updated when the services or applicable requirements materially change. The effective date at the top of this page will be updated when revised terms are published.
14. Contact
For questions about these terms, use the contact information published on zhihaol.eu.org.