Privacy Policy隐私政策

Last updated 15 October 2026. This policy covers the website yanzhangtech.com and applies to apps published by Shenzhen Yanzhang Technology Co., Ltd. unless an app ships its own policy.

1. Who we are · 我们是谁

Shenzhen Yanzhang Technology Co., Ltd. (深圳市衍章科技有限公司), Longhua District, Shenzhen, China, is the data controller for the information described here. Contact: support@yanzhangtech.com.

2. This website · 本网站

yanzhangtech.com is a static site. It sets no cookies, runs no analytics and collects no personal information. Our hosting provider may record standard server logs (IP address, user agent, requested page) for security and operation.

本网站为静态页面，不设置 Cookie，不使用统计分析，不收集个人信息。托管服务商可能出于安全与运维目的记录标准访问日志（IP 地址、浏览器标识、访问页面）。

3. Our apps · 我们的应用

Each app describes in its own in-app privacy notice and App Store listing exactly what it collects. In general our apps may process:

• Account information you provide, such as a phone number or email, to sign in · 您提供的登录信息（手机号或邮箱）
• Learning progress and content you create in the app, stored to sync across your devices · 学习进度与您在应用内创建的内容，用于多设备同步
• Diagnostic data such as crash reports and device model, used only to fix problems · 崩溃报告与设备型号等诊断数据，仅用于排查问题
• Microphone or camera input only when you use a feature that needs it, such as recording a spoken answer, and only after you grant permission · 仅在您使用需要麦克风或摄像头的功能并授权后才访问相应硬件

We do not sell personal information and do not use it for third-party advertising. 我们不出售个人信息，也不将其用于第三方广告。

4. Retention and deletion · 保存与删除

Data is kept for as long as your account exists. You can request deletion of your account and associated data at any time by emailing support@yanzhangtech.com; we complete requests within 15 business days. 您可随时发送邮件申请删除账号及相关数据，我们将在 15 个工作日内处理。

5. Children · 未成年人

Our learning apps may be used by minors under the supervision of a parent or guardian. We collect only what the service needs and do not show targeted advertising to minors. 我们的学习应用可在家长或监护人监督下由未成年人使用；我们仅收集服务所必需的信息，不向未成年人展示定向广告。

6. Changes · 变更

We will post any change to this policy on this page and update the date above. 本政策如有变更，将在本页面公布并更新上方日期。