Last updated: October 13, 2026
1. What we collect
- Page usage: which page you viewed, when, and how long you stayed (dwell time in milliseconds) and how far you scrolled (maximum scroll depth as a percentage).
- Source: the referring domain and any UTM parameters (
utm_source, utm_medium, utm_campaign), plus which internal entry point you arrived through (card, share link, WeChat, email or the join page).
- Device and browser: device class (mobile / tablet / desktop), operating system, browser type (including whether you are inside the WeChat in-app browser), viewport width in pixels, and your browser's preferred language.
- Approximate location: country, region/province, city, postal code, coarse latitude/longitude and time zone, as resolved by the CDN from your connection. We do not store your raw IP address. We store only a salted hash of it (HMAC-SHA256 with a server-side secret, truncated to 16 hexadecimal characters), used solely to count unique visitors. The secret never leaves the server, so the hash cannot be reversed to your IP.
- Anonymous identifiers: a random visitor identifier and a session identifier generated by your own browser. They are random strings — not derived from you, your device or your IP.
- Calculator data: the values you type into a calculator and the results it produces, so we can understand which figures people actually care about.
- Voluntary information: the optional profile answers (age band, asset band, goal, markets, whose methodology you follow, leverage experience), your feedback and rating, the "would you pay for this" answers, and any contact detail you choose to give us.
- Subscription email: the email address you give us, and its confirmation status.
We do not use cookies. We do not collect names, government identifiers, financial account numbers or precise location, and there is no login or password on this site.
2. Why we collect it
- To operate the site and make the calculators work.
- To understand which tools and methodologies people find useful, so we can improve and extend them.
- To measure engagement and retention in aggregate.
- To personalise what we suggest to you.
- To send you the emails you asked for: the confirmation email and the annual rebalancing reminder.
- To develop future commercial partnerships, using aggregated or de-identified insight.
3. Who processes it
- Cloudflare — CDN, page delivery, request routing, the
/api/ endpoints (Workers) and the database (D1). Cloudflare also supplies the country/region/city information described above.
- GitHub Pages — serves the static pages.
- counter.dev — a lightweight, privacy-focused page-view counter.
- Brevo — sends our confirmation and reminder emails, and stores the subscriber list.
These providers process data on our behalf, and each maintains its own privacy documentation.
4. Sharing
We share data with the service providers listed above as needed to run the site. We may also share de-identified or aggregated insight — for example "34% of visitors are most interested in CLEC's methodology" — with partners or advertisers.
We do not sell information that can directly identify you, such as your email address or your contact details. We do not share your email address with third parties for their own marketing.
5. How long we keep it
- Statistical and calculator records: 24 months, after which they are deleted.
- Unsubscribed email addresses: deleted 30 days after you unsubscribe.
- Subscriber email addresses while you remain subscribed: kept until you unsubscribe or ask us to delete them.
6. Your choices
- Global Privacy Control: if your browser sends the Global Privacy Control signal (
navigator.globalPrivacyControl === true), this site will not generate, store or upload any identifier at all. Only the basic page path, event type and referring domain are recorded, with no visitor or session identifier.
- Clear your browser data: the anonymous identifiers live in your browser's local storage. Clearing site data resets them, and we will no longer be able to link any new activity to the old identifier.
- Ask us to delete your data: email [email protected] and include your visitor identifier (the button in section 7 below shows it and copies it for you). We will delete every record associated with it and confirm when done.
- Cookies: there are none to opt out of.
7. Settings
This button shows the anonymous visitor identifier stored in this browser. It is a random string that does not identify you, but it is the key we would need in order to find and delete your records — so it is the fastest way to make a deletion request.
8. Contact
Privacy questions or requests: [email protected].
最后更新：2026 年 10 月 13 日
一、我们收集什么
- 页面使用：你访问了哪个页面、什么时间、停留多久（毫秒），以及滚动到了多深（最大滚动深度百分比）。
- 来源：来源域名、UTM 参数（
utm_source、utm_medium、utm_campaign），以及你是通过哪个站内入口进来的（工具卡片、分享链接、微信、邮件或加入页）。
- 设备与浏览器：设备类型（手机 / 平板 / 桌面）、操作系统、浏览器类型（含是否在微信内置浏览器中打开）、视口宽度（像素）、浏览器首选语言。
- 粗略位置：由国家/省/城市/邮编、粗略经纬度、时区组成，由 CDN 根据你的连接解析得到。我们不保存你的原始 IP 地址。我们只保存它的加盐哈希（用服务端密钥做 HMAC-SHA256，截取前 16 位十六进制），且仅用于统计独立访客数。该密钥不会离开服务器，因此无法由哈希反推出你的 IP。
- 匿名标识：由你自己的浏览器生成的随机访客标识与会话标识。它们是随机字符串，并非由你本人、你的设备或你的 IP 推导而来。
- 计算数据：你在计算器中输入的数值与该计算产生的结果，用于了解用户真正关心哪些数字。
- 自愿填写的信息：可选的画像答案（年龄段、资产区间、目标、投资市场、你主要参考谁的方法、杠杆经验）、你的反馈与评分、「愿意为什么付费」的回答，以及你主动留下的联系方式。
- 订阅邮箱：你提供的邮箱地址及其确认状态。
我们不使用 cookie，不收集姓名、政府证件号码、金融账号或精确位置，本站也没有账号与密码。
二、为什么收集
- 运营本站，让各计算器能正常工作。
- 了解哪些工具与方法论对用户真正有用，据此改进与扩展。
- 以汇总方式衡量参与度与留存。
- 向你提供个性化推荐。
- 发送你订阅的邮件：确认邮件与每年 12 月 1 日的再平衡提醒。
- 基于去标识化或汇总后的洞察，发展未来的商业合作。
三、由谁处理
- Cloudflare —— CDN、页面下发、请求路由、
/api/ 接口（Workers）与数据库（D1）。上文提到的国家/省/城市信息也由 Cloudflare 提供。
- GitHub Pages —— 托管静态页面。
- counter.dev —— 轻量、注重隐私的页面访问计数器。
- Brevo —— 发送我们的确认与提醒邮件，并保存订阅列表。
这些服务商代表我们处理数据，各自都有自己的隐私说明文件。
四、共享
我们会在运营本站所必需的范围内，把数据共享给上述服务提供商。我们也可能把去标识化或汇总后的洞察——例如「34% 的访客最关注 CLEC 的方法论」——共享给合作方或广告主。
我们不会出售能直接识别你个人身份的信息，如邮箱与联系方式；也不会把你的邮箱提供给第三方用于其自身的营销。
五、保存期限
- 统计与计算记录：24 个月，到期删除。
- 已退订的邮箱地址：退订后 30 天删除。
- 仍处于订阅状态的邮箱地址：保留至你退订或要求我们删除为止。
六、你的选择
- 全局隐私控制（GPC）：如果你的浏览器发送 Global Privacy Control 信号（
navigator.globalPrivacyControl === true），本站将不生成、不存储、不上传任何标识，只记录基本的页面路径、事件类型与来源域名，不含访客或会话标识。
- 清除浏览器数据：匿名标识保存在你浏览器的本地存储中。清除站点数据即可重置；重置后我们无法再把新的活动与旧标识关联起来。
- 要求删除你的数据：发邮件到 [email protected]，并附上你的访客标识（可用下方第 7 节的按钮查看并一键复制）。我们会删除与该标识关联的全部记录，并在完成后告知你。
- Cookie：本站不使用 cookie，无需退出。
七、设置
点击按钮可显示本浏览器中保存的匿名访客标识。它是一串随机字符，不能识别你的身份，但它是我们找到并删除你相应记录所需的钥匙——因此这也是提出删除请求最快的方式。
提示：上面英文版与本节的按钮是同一个控件（语言切换时显示对应语言的那一个）。
八、联系方式
隐私相关问题或请求：[email protected]。