隐私政策
本政策说明 EasyLect 如何处理课堂内容、订阅信息及运行数据。使用第三方 AI 功能前，App 会说明发送的数据和接收方，并提供“同意使用 AI 服务”和“暂不同意”。同意后才会发送课堂内容；麦克风权限由系统另行请求。
1. 我们处理的数据
- 课堂内容：麦克风音频、英文转写、中文翻译、课堂总结、答疑内容、你校对的文字、课堂照片以及录音和历史记录。
- 匿名用户标识：App 生成的用户 ID，用于关联课堂会话、云端归档、诊断记录与会员权益。我们不要求创建姓名或邮箱账户。
- 订阅信息：商品、购买凭据与订阅状态，由 Apple 和 RevenueCat 处理并向 App 提供权益结果。我们不接收完整银行卡信息。
- 广告归因信息：如果你通过 Apple Ads 广告下载 App Store 版，App 会通过 Apple 的 AdServices 生成一次性归因令牌并交给 RevenueCat；RevenueCat 据此向 Apple 获取是否来自广告以及广告系列、广告组、关键词等归因结果，并与匿名用户 ID 和订阅状态关联，用于衡量广告带来的试用和订阅效果。该功能不读取广告标识符（IDFA）、不请求跟踪授权、不包含课堂内容，也不用于跨 App 广告跟踪。
- 使用与诊断信息：功能使用事件、请求与错误信息、性能及网络诊断。这些诊断信息由 EasyLect 的阿里云服务处理。
2. 用途与处理方式
获得你的明确同意后，麦克风音频及识别上下文发送至阿里云百炼（通义千问）进行语音识别；待翻译文字发送至阿里云百炼，部分兼容链路使用火山引擎（豆包）；课堂文字、现有笔记和提问发送至火山引擎（豆包），用于总结、答疑及历史内容整理。仅发送完成所选功能所需的内容，永久模型密钥保留在 EasyLect 服务器。录音、课堂文字、照片和历史记录保存在设备上，并为保障服务稳定性临时保存至 EasyLect 的阿里云服务；使用及诊断日志也由该服务处理。
我们使用匿名用户 ID 将这些记录与设备上的课堂、订阅权益关联。购买和恢复购买由 Apple 与 RevenueCat 提供支持。我们不将这些数据用于跨 App 广告跟踪，也不出售课堂内容。
第三方数据保护
我们仅委托为用户数据提供与本政策同等或更高保护的服务商，依据适用服务协议限制其为提供上述功能处理必要数据，并要求保密、安全传输及访问控制。数据通过 HTTPS 或加密 WebSocket 传输，EasyLect 云端对象使用私有存储和受限访问。服务商的数据保护说明见阿里云百炼隐私说明及火山引擎隐私政策。我们不出售课堂内容，也不将其用于广告跟踪。
3. 存储、传输与保留
设备上的历史由你在 App 内管理。云端副本用于保障服务稳定性及排查问题。运营方会定期清理不再为这些目的所需的云端副本；目前没有统一的自动清除期限。诊断和依法必须保留的记录在相关目的所需期间保留。删除本机历史不会自动删除已经上传的云端副本。传输采用加密连接，云端归档使用受控存储；任何网络或存储系统都无法保证绝对安全。
由于 AI、订阅和分析服务可能在不同地区提供，相关数据可能在服务提供商所在地处理。我们仅向提供上述功能所需的服务方传递相应数据。
4. 你的选择与权利
你可以选择“暂不同意”，仍可查看本机历史、回听录音及使用本机导出。你也可以在 App 的“更多设置”中点击“撤回 AI 数据使用同意”，停止后续第三方 AI 请求；再次使用需重新同意。撤回不会自动删除本机历史或已经发送的数据。你可以在系统设置中撤销麦克风权限。你可以删除设备上的课堂历史。若要访问、更正或删除与匿名用户 ID 关联的云端归档或诊断数据，请按数据删除与隐私选择说明联系我们。我们会核验请求并回复处理结果；法律要求保留的记录将按适用要求处理。
5. 未成年人
EasyLect 是课堂辅助工具。未成年人应在监护人指导下使用，并在录音前遵守所在课堂与当地有关录音、个人信息的规则。我们不会主动要求未成年人提交真实姓名或联系方式。
6. 政策更新与联系
如果数据处理方式发生重要变化，我们会更新本页面和生效日期；需要时会在 App 内提示。隐私问题请发送邮件至 shaohuadou@foxmail.com。
Privacy Policy (English)
Information we process
EasyLect processes microphone audio, lecture recordings, transcripts, Chinese translations, summaries, question assistance, text corrections, lecture photos and history. An app-generated user ID links sessions, cloud archives, diagnostics and subscription access. Apple and RevenueCat process purchase credentials and subscription status; we do not receive full payment card details. If you download the App Store version from an Apple Ads ad, the app passes a one-time Apple AdServices attribution token to RevenueCat, which retrieves the attribution result from Apple (whether the install came from an ad, and its campaign, ad group and keyword) and links it to the anonymous user ID and subscription status to measure trial and subscription results from ads. This does not read the advertising identifier (IDFA), request tracking permission, include lecture content or enable cross-app advertising tracking. We also process usage, error, performance and network diagnostics. EasyLect’s Alibaba Cloud services process diagnostic information.
How we use and share it
Before sending lecture content to AI services, EasyLect identifies the data and recipients and asks you to explicitly agree or decline. After consent, microphone audio and recognition context go to Alibaba Cloud Model Studio (Qwen) for speech recognition. Text for translation goes to Alibaba Cloud Model Studio, with some compatible flows using Volcengine (Doubao). Lecture text, notes and questions go to Volcengine (Doubao) for summaries, question assistance and history content organization. Only content needed for the selected feature is sent. Recordings, text, photos and lecture history are stored on the device and temporarily in EasyLect’s Alibaba Cloud services for reliability. Diagnostic logs help run and troubleshoot the service. We do not sell lecture content or use this information for cross-app advertising tracking.
Third-party data protection
We only entrust user data to providers offering the same or greater protection as this policy. Under the applicable service agreements, we limit processing to the necessary purposes described above and require confidentiality, encrypted transmission and access controls. Network transmission uses HTTPS or encrypted WebSocket connections; cloud objects are private with restricted access. See Alibaba Cloud Model Studio’s privacy notice and Volcengine’s privacy policy.
Storage and your choices
The operator periodically cleans cloud copies that are no longer needed for reliability and troubleshooting; there is no single automatic deletion period at present. Diagnostics and records required by law remain for the period needed for their purposes. Deleting local history does not automatically delete cloud copies. Data is transferred over encrypted connections and stored with access controls. Providers may process data in different regions. You may decline AI consent and still view local history, play recordings and export local content. In the app’s Settings, choose “Withdraw AI Data Consent” to stop subsequent third-party AI requests. Consent is required again before further AI use. Withdrawal does not automatically delete local history or data already sent. You may also revoke microphone permission in system Settings, delete local history, or request access, correction or deletion of associated cloud data using the instructions on our Data Deletion page. We may need to verify a request and retain records required by law.
Children, changes and contact
Minors should use EasyLect with guardian guidance and follow applicable classroom recording rules. We do not ask for a real name or contact details to create an account. Material policy changes will appear here and, when appropriate, in the app. Email shaohuadou@foxmail.com with privacy questions.