我们郑重承诺：未经您同意，我们不会收集、存储或分享您的任何个人信息（定义见下文）。您的所有错题数据均保存在您本人的设备本地。
We solemnly commit: without your consent, we will not collect, store, or share any of your personal information (as defined below). All your mistake data is stored locally on your device.
1. 我们不收集的信息类型
1. Information We Do NOT Collect
您的姓名（除非您主动输入用于显示）、头像、联系方式、位置信息、设备标识符等。
Your name (unless you voluntarily input it for display), profile photo, contact information, location data, device identifiers, etc.
2. 数据存储
2. Data Storage
您的错题内容及相关数据仅存储在您设备本地。我们不运营任何服务器来存储您的个人数据。
Your mistake content and related data are stored only on your local device. We do not operate any servers to store your personal data.
3. 数据传输安全
3. Data Transmission Security
在您主动发起的AI分析等需要网络通信的场景下，所有数据传输均采用加密连接（TLS/SSL）。第三方服务提供商（如阿里云百炼等）按其隐私政策处理您的请求数据。
In scenarios requiring network communication (e.g., AI analysis initiated by you), all data transmission uses encrypted connections (TLS/SSL). Third-party service providers (such as Alibaba Cloud Bailian) handle your request data according to their privacy policies.
4. 登录方式说明
4. Login Method
本软件登录时仅使用您的第三方账号中的用户标识符（User ID）用于账号体系验证，不读取您的个人资料、邮箱地址或其他信息。
When logging in, this software only uses the User ID from your Third-Party Account for account verification. We do not access your profile, email address, or other information.
5. 第三方支付说明
5. Third-Party Payment
在购买付费服务时，调用第三方支付接口完成交易。支付相关数据由第三方支付按其隐私政策处理，我们无法获取您的银行卡号、支付密码等敏感信息。
When purchasing paid services, the Third-Party Payment interface is called to complete the transaction. Payment-related data is handled by Third-Party Payment under its privacy policy. We cannot access your bank card number, payment password, or other sensitive information.
6. AI 错题分析功能说明
6. AI Mistake Analysis
本软件提供可选的 AI 辅助分析服务（包括错题图片识别、解题思路讨论）。该服务由第三方服务商 杭州耘点科技有限公司（通义千问大模型 API） 提供技术支持。在此过程中：
This software provides an optional AI-assisted analysis service (including mistake image recognition and problem-solving discussions). This service is provided by third-party service provider Hangzhou YunDian Technology Co., Ltd. (Tongyi Qianwen Large Model API). During this process:
- 我们发送给第三方的数据：仅当您主动调用 AI 功能时，您当前选中的题目图片、解题图片以及您输入的聊天内容会被加密传输至通义千问 API，用于即时生成分析结果。
- Data we send to third parties: Only when you actively invoke the AI feature, your currently selected question images, solution images, and chat content you input will be encrypted and transmitted to the Tongyi Qianwen API for generating analysis results.
- 我们不保存任何 AI 交互记录：我们不会在本地或任何服务器上保存您与 AI 的对话历史、聊天记录或 AI 返回的分析结果。
- We do not save any AI interaction records: We do not save your conversation history, chat records, or AI analysis results on local devices or any servers.
- 本地保存的仅为错题图片：您原有的错题图片仍按本软件默认方式保存在您设备的本地相册或本地存储中，此行为不受 AI 功能影响。
- Only mistake images are saved locally: Your original mistake images are still saved in your device's local album or local storage per the default behavior of this software. This behavior is not affected by the AI feature.
- AI 服务商的数据处理：通义千问 API 会按其《隐私政策》处理您的请求数据。根据其政策约定，您的数据不会被用于训练或改进其模型。
- AI service provider data handling: The Tongyi Qianwen API processes your request data under its Privacy Policy. According to its policy, your data will not be used to train or improve its models.
- 您的选择权：本 AI 功能为可选服务，您可完全自主决定是否使用。拒绝使用不影响您通过手动方式录入错题或使用本软件的其他核心功能。
- Your choice: This AI feature is optional. You have full autonomy to decide whether to use it. Declining does not affect your ability to manually enter mistakes or use other core features of this software.
AI 服务商隐私政策链接：https://terms.alicdn.com/legal-agreement/terms/privacy_policy_full/20230811162903500/20230811162903500.html
AI Service Provider Privacy Policy: https://terms.alicdn.com/legal-agreement/terms/privacy_policy_full/20230811162903500/20230811162903500.html
7. 账号注销说明
7. Account Deletion
如果您需要注销您的账号，请按照以下流程操作：
If you need to delete your account, please follow these steps:
- 打开 APP，点击首页右上角头像按钮进入「个人中心」页面；
- Open the app, tap the avatar button in the upper right corner of the home screen to enter the "Profile" page;
- 点击「删除账户」按钮，按照提示完成注销。
- Tap the "Delete Account" button and follow the prompts to complete the deletion.
请注意，删除后将解除第三方登陆对本软件的授权，但本地数据与 AI 配额均不受影响，您重新登录即可恢复。
Please note that deleting your account will revoke the third-party login authorization for this software, but your local data and AI quota will not be affected. You can restore them by logging in again.