Terms of Use使用条款

Last updated: October 13, 2026

1. Educational tools only — not advice

This site provides educational calculators built on methodologies that their authors have published publicly. It does not provide investment, tax, legal or accounting advice, and nothing on this site is a recommendation, offer or solicitation to buy or sell any security or to adopt any strategy.

We do not guarantee that any result is accurate, complete, up to date or suitable for your situation. Results depend entirely on the inputs you supply and on the assumptions built into each formula. Historical backtests and simulations are illustrations of a method, not predictions; actual results will differ, sometimes substantially.

You are solely responsible for your own decisions and you bear your own risk. Consult a licensed professional before acting on anything you see here.

2. No affiliation with referenced authors

We are not affiliated with, endorsed by, sponsored by or connected to any author, book, publisher or institution referenced on this site — including but not limited to CLEC, 老师 James, 硅谷居士 (Silicon Valley Hermit), and any other creator whose publicly described methodology is modelled here. All names, titles and copyrights belong to their respective owners.

Where we name a source on a tool page, we do so only to tell you which publicly described method the tool follows, so that you can go read the original work yourself.

3. Acceptable use

• Do not use this site for any unlawful purpose, or in any way that breaches applicable law or regulation.
• Do not scrape, crawl, bulk-download or otherwise extract data from the site or from the /api/ endpoints, and do not attempt to circumvent rate limits, access controls or other technical protections.
• Do not attempt to disrupt, overload, reverse-engineer or gain unauthorised access to the site or its infrastructure.
• Do not upload or submit content that is unlawful, infringing, malicious or misleading.
• The code, design, text and data of this site that are our own are protected by copyright (see the LICENSE file). Do not copy, mirror, republish or use them commercially without our written permission; personal study and short quotations with a credit and a link are welcome.

We may block access, at our discretion and without notice, where we believe use is abusive or unlawful.

4. Data collection and consent

By using this site you agree that we may collect, use and analyse your usage data as described in our Privacy Notice — including the values and results you enter into the calculators, device and browsing information, an anonymous visitor identifier, any profile or feedback information you voluntarily provide, and the email address you subscribe with — in order to operate and improve the product, for statistical analysis, for personalised recommendations, to send you email you have subscribed to, and, after de-identification or aggregation, for commercial partnerships (for example providing aggregate insights to partners or advertisers).

The Privacy Notice explains what is collected, why, who processes it, how long we keep it, and how to exercise your choices. It forms part of these terms.

5. Disclaimer and limitation of liability

The site is provided "as is" and "as available", without warranties of any kind, whether express or implied, including any implied warranty of merchantability, fitness for a particular purpose, accuracy or non-infringement. We do not warrant that the site will be uninterrupted, timely, secure or error-free, or that any defect will be corrected.

To the fullest extent permitted by applicable law, we are not liable for any indirect, incidental, special, consequential, exemplary or punitive damages, or for any loss of profit, revenue, data, goodwill or opportunity, arising out of or relating to your use of, or inability to use, this site — even if we have been advised of the possibility of such damage. Where liability cannot lawfully be excluded, our aggregate liability is limited to the greater of the amount you paid us in the twelve months before the claim or USD 0.

6. Changes to these terms

We may update these terms from time to time. The revised version takes effect when it is posted on this page, and the "last updated" date above will change. Your continued use of the site after that constitutes acceptance of the revised terms. If you do not agree, please stop using the site.

7. Contact

Questions about these terms: [email protected].

8. Governing law and jurisdiction

To be confirmed — this section is intentionally left blank pending review by the site owner and a qualified lawyer.