隐私政策

生效日期：2026 年 5 月 1 日

KotobaFlow（又名“Kotoba - 日语句子训练”）是一款日语句型、五十音和听力练习工具。本政策说明本 App 如何处理用户数据。

1. 我们收集的数据

当前版本的 KotobaFlow 不要求登录账号，不接入广告 SDK，不接入第三方分析 SDK，也不会主动收集、上传或出售个人数据。

2. 本地保存的数据

为提供练习体验，App 会在设备本地保存以下数据：

• 学习进度、错题、掌握状态和复习日期。
• 练习设置，例如每日训练数量、显示提示、答案判定强度等。
• 当前正在学习的教材选择。

这些数据保存在用户设备本地，不会由 KotobaFlow 上传到服务器。

3. 语音与内容

App 内置基础学习内容和 N2 听力词库；部分高质量句子语音包会由用户主动下载到本机后离线播放。未下载高质量语音时，App 可能使用系统语音朗读功能。当前版本不会把用户练习内容上传到外部 TTS 服务。

4. 数据导出与分享

如果用户主动使用导出或系统分享功能，相关文件会由用户自行选择保存或分享。KotobaFlow 不会在未经用户操作的情况下自动分享这些数据。

5. 儿童隐私

KotobaFlow 不会故意收集儿童的个人信息。当前版本也不包含面向儿童的账号、聊天、社交或广告功能。

6. 第三方服务

当前 App 运行时不使用第三方分析、广告或追踪服务。若未来加入云同步、账号、内购下载或分析能力，本政策会在上线前更新。

7. 联系方式

如有隐私相关问题，请联系：he.minghao@qq.com

Privacy Policy

Effective date: May 1, 2026

KotobaFlow is a Japanese sentence, kana, and listening practice app. This policy explains how the app handles user data.

1. Data We Collect

The current version of KotobaFlow does not require an account, does not include advertising SDKs, does not include third-party analytics SDKs, and does not actively collect, upload, or sell personal data.

2. Data Stored Locally

To provide the learning experience, the app stores the following data locally on the user's device:

• Practice progress, mistakes, mastery status, and review dates.
• Practice settings such as daily training size, hint display, and answer checking mode.
• The currently selected textbook.

This data stays on the user's device and is not uploaded to KotobaFlow servers.

3. Audio and Content

The app bundles the core learning content and the N2 listening word library. Some high-quality sentence voice packs are downloaded only when the user chooses to download them, then stored locally for offline playback. If high-quality audio has not been downloaded, the app may use the system speech feature. The current version does not upload user practice content to external TTS services.

4. Export and Sharing

If the user explicitly uses export or system sharing features, the exported file is saved or shared by the user. KotobaFlow does not automatically share this data.

5. Children's Privacy

KotobaFlow does not knowingly collect personal information from children. The current version does not include account, chat, social, or advertising features directed at children.

6. Third-Party Services

The current app runtime does not use third-party analytics, advertising, or tracking services. If cloud sync, accounts, downloadable purchases, or analytics are added in the future, this policy will be updated before release.

7. Contact

For privacy questions, contact: he.minghao@qq.com