Overview

Restcalc is a free educational sleep tool. This policy explains what data we handle and how. The short version: we do not collect or upload your data.

1. We do not collect or upload your data

Every calculation on Restcalc runs entirely inside your own browser. We never receive, store, or transmit your inputs — bedtimes, wake times, age group, or sleep-log entries. There is no account and no server-side profile of you.

2. Sleep-log storage

If you use the Sleep Log tool, your entries are saved only in your own browser using localStorage. They stay on your device and are never sent to us or any server. Clearing your browser data (or using private/incognito mode) removes them immediately.

3. Cookies and third parties

We do not set our own tracking cookies. However, this site may display Google AdSense advertisements and Amazon affiliate links. Those third parties may set their own cookies — for example, to personalize ads or attribute affiliate sales — when you interact with them. You can manage cookies through your browser settings at any time.

Third parties (such as Google) may also use web beacons or collect your IP address to personalize or attribute ads. Learn how Google uses data when you use its partners' sites: How Google uses data.

4. Affiliate disclosure

Restcalc is a participant in the Amazon Associates program, an affiliate advertising program. If you click an Amazon link and make a qualifying purchase, Amazon may set a cookie and we may earn a commission — at no extra cost to you.

5. Children

Restcalc is not directed at children under 13, and we do not knowingly collect data from them.

6. Your choices

Because we store nothing on our side, there is no account to delete. To remove your local sleep-log data, clear your browser's storage for this site.

7. Contact

Questions about this policy? Email the site operator at Jayvhzw@gmail.com.

概述

Restcalc 是一款免费的睡眠规划教育工具。本政策说明我们如何处理你的数据。简而言之：我们不收集、也不上传你的数据。

1. 我们不收集或上传你的数据

Restcalc 上的所有计算都完全在你的浏览器本地运行。我们从未接收、存储或传输你的任何输入——就寝时间、起床时间、年龄段或睡眠记录。没有账号，也没有关于你的任何服务器端档案。

2. 睡眠记录的存储

如果你使用睡眠记录工具，你的记录只保存在你自己的浏览器（localStorage）中。它们留在你的设备上，永远不会发送给我们或任何服务器。清除浏览器数据（或使用无痕模式）会立即将它们删除。

3. Cookie 与第三方

我们不会自行设置追踪 Cookie。但本站点可能展示 Google AdSense 广告与亚马逊联盟链接。当你与这些第三方互动时，它们可能会设置自己的 Cookie——例如用于广告个性化或联盟归因。你可以随时通过浏览器设置管理 Cookie。

此外，第三方（如 Google）还可能使用网络信标（web beacon）或通过您的 IP 地址收集信息，用于广告个性化与归因。了解 Google 如何在使用其合作伙伴网站时使用数据：Google 如何使用数据。

4. 联盟披露

Restcalc 是亚马逊联盟（Amazon Associates）计划的参与者，属于联盟广告项目。如果你点击亚马逊链接并完成符合条件的购买，亚马逊可能会设置一个 Cookie，我们可能因此获得佣金——不会增加你的任何成本。

5. 未成年人

Restcalc 不面向 13 岁以下儿童，我们也不会在知情情况下收集他们的数据。

6. 你的选择

由于我们不存储任何你的数据，也就没有需要删除的账号。要移除本地的睡眠记录，只需清除本站点的浏览器存储即可。

7. 联系方式

对本政策有疑问？请通过邮箱联系站点运营方：Jayvhzw@gmail.com。