1. 概述

练习纸生成器（下称“本应用”）是一款“自带密钥（BYOK）”的本地优先工具：在您的设备上把一句话需求转换为可直接打印的练习纸 PDF。我们不运营任何用于收集您数据的服务器，也不会将您的个人信息回传给我们。

2. 本应用处理的信息

2.1 您主动提供的信息

• 第三方大模型服务的 API Key、接口地址（Base URL）、模型名称；
• 您输入的练习需求与对话内容。

2.2 存储在本机（您的设备）的信息

• API Key / Base URL / 模型名称 —— 使用操作系统凭据保险箱加密存储（Windows 凭据管理器）；
• 生成历史、对话会话、排版预设、界面与偏好设置 —— 保存在应用的本地数据中；
• 生成的 PDF 文件 —— 保存在应用的本地文档目录。

2.3 我们不收集的信息

• 不收集姓名、电子邮箱、账号、手机号、位置、设备标识、通讯录等个人信息；
• 不进行用户画像、广告投放、行为分析或跨应用跟踪；
• 本应用不包含任何分析（analytics）、遥测（telemetry）、崩溃上报或广告 SDK。

3. 网络传输与第三方服务

仅当您主动点击“生成”或“发送”时，本应用才会使用您配置的 API Key，将您的需求/对话内容直接发送至您选择的第三方大模型服务商（例如 DeepSeek、OpenRouter、通义千问等）的接口，以生成内容。

• 该传输不经过我们（我们没有中转服务器）；
• 第三方如何收集与处理数据，适用其自身的隐私政策与服务条款，请在使用前自行查阅并谨慎选择服务商；
• 除上述调用外，本应用不向任何其他方传输数据。

4. 数据存储与安全

• API Key 等敏感信息通过系统凭据保险箱加密保存，不会以明文写入普通文件，也不会被写入日志；
• 其余数据（历史、会话、预设、PDF）仅存储在本机应用数据目录；
• 我们不会将上述数据上传至我们的服务器。

5. 数据保留与删除

• 您可在应用设置中删除 API Key、清空历史记录、删除会话与排版预设；
• 生成的 PDF 保存在本地，可由您自行删除；
• 卸载本应用不会自动删除您已生成的 PDF，如需请手动清理。

6. 儿童隐私

本应用面向教育工作者与家长，用于制作练习材料；本应用不面向儿童收集任何个人信息。

7. 权限说明

本应用需要网络访问权限，仅用于调用您指定的第三方大模型接口。除全信任运行所需外，不申请其他敏感权限。

8. 本政策的变更

我们可能不时更新本政策。如有重大变更，我们会在应用内或发布页面提示；继续使用即视为接受更新后的政策。

9. 联系我们

如对本政策有任何疑问，请联系：ivan@beiguaedu.com（上海北瓜教育科技）。

1. Overview

Worksheet Generator (the “App”) is a bring-your-own-key (BYOK), local-first tool that turns a one-line request into a print-ready worksheet PDF on your device. We do not operate any server that collects your data, and we do not receive your personal information.

2. Information the App handles

2.1 Information you provide

• Your third-party LLM API key, base URL, and model name;
• The requests and chat content you type.

2.2 Information stored locally (on your device)

• API key / base URL / model name — stored encrypted in the operating system credential vault (Windows Credential Manager);
• Generation history, chat sessions, layout presets, and preferences — stored in the App’s local data;
• Generated PDF files — stored in the App’s local documents folder.

2.3 Information we do NOT collect

• We do not collect names, email addresses, accounts, phone numbers, location, device identifiers, or contacts;
• No profiling, advertising, behavioral analytics, or cross-app tracking;
• The App contains no analytics, telemetry, crash-reporting, or advertising SDKs.

3. Network transmission and third parties

Only when you tap “Generate” or “Send” does the App use your configured API key to send your request/chat content directly to the third-party LLM provider you selected (e.g., DeepSeek, OpenRouter, Qwen, etc.) in order to produce content.

• This transmission does not pass through us (we have no relay server);
• How the third party collects and processes data is governed by its own privacy policy and terms; please review them and choose your provider carefully;
• Apart from these calls, the App transmits no data to anyone else.

4. Storage and security

• Sensitive data such as the API key is encrypted in the OS credential vault; it is never written to ordinary files in plain text and never written to logs;
• All other data (history, sessions, presets, PDFs) stays in the App’s local data folder;
• We never upload this data to our servers.

5. Retention and deletion

• You can delete the API key, clear history, and delete sessions/presets in the App’s Settings;
• Generated PDFs are stored locally and can be deleted by you;
• Uninstalling the App does not automatically delete PDFs you generated; delete them manually if needed.

6. Children’s privacy

The App is intended for educators and parents to create practice materials, and does not collect any personal information from children.

7. Permissions

The App requires network access, used solely to call the third-party LLM endpoint you configure. It requests no other sensitive permissions beyond those needed to run as a full-trust packaged app.

8. Changes to this policy

We may update this policy from time to time. For material changes we will notify you in the App or on the product page. Continued use constitutes acceptance of the updated policy.

9. Contact

For questions about this policy, contact ivan@beiguaedu.com (Shanghai Beigua Education Technology).