一、概述
1. Overview
Mnemo（以下简称"本应用"）是一款数字记忆训练游戏，提供九宫格挑战、记忆矩阵、速记闯关、翻牌配对、编码图鉴等训练模式。
你在本应用内的游戏数据（成绩、经验、编码库修改等）仅保存在你自己的设备中，本应用不会上传或共享这些数据。为维持应用免费运营，应用内可能展示第三方广告服务（Google AdMob）提供的广告；除本政策"第三方服务"章节披露的情形外，本应用不收集或传输你的个人数据。
Mnemo ("the App") is a memory training game offering Grid Challenge, Matrix Memory, Chain Memory, Pair Match, and Code Index training modes.
Your in-app game data (scores, XP, code-book edits, etc.) is stored only on your own device; the App never uploads or shares it. To keep the App free, it may display ads served by a third party (Google AdMob); apart from the disclosures in the "Third-Party Services" section, the App does not collect or transmit your personal data.
二、我们收集哪些信息
2. What Information We Collect
我们不收集你的个人数据。具体包括：
- 不收集你的姓名、联系方式、位置等个人信息；你的游戏数据不离开你的设备；
- 应用内无统计 SDK、无追踪服务；广告由 Google AdMob 提供，其 SDK 可能收集设备广告标识符等常规信息（见"第三方服务"章节）；
- 无账号注册、无云同步、无云端存储；排行榜为可选项，仅在你主动登录 Google Play 后使用；
- 应用仅在加载广告以及你主动使用排行榜功能时需要联网，不会向任何服务器发送你的游戏数据。
We do not collect your personal data. Specifically:
- No name, contact details, or location are collected; your game data never leaves your device;
- No analytics SDKs or tracking services; ads are served by Google AdMob, whose SDK may collect routine information such as the advertising ID (see "Third-Party Services");
- No account registration, no cloud sync, no cloud storage; leaderboards are optional and only used if you actively sign in with Google Play;
- The app only needs internet access to load ads and to use leaderboards when you opt in; it never sends your game data to any server.
三、数据如何存储
3. How Your Data Is Stored
你在本应用内产生的数据（最佳成绩、经验与等级、每日任务进度、连续训练天数、设置项、编码图鉴的修改）仅保存在你设备的本地数据库中。卸载应用或清除应用数据将永久删除这些内容，请谨慎操作。
若你主动登录 Google Play 排行榜，你的昵称与成绩会出现在 Google 的排行榜服务中，由 Google 服务器存储，遵循 Google 隐私政策。
All data you create in the app (best scores, XP and level, daily challenge progress, training streak, settings, and code-book edits) is stored only in the local database on your device. Uninstalling the app or clearing its data will permanently delete this content — please operate with care.
If you voluntarily sign in to Google Play leaderboards, your nickname and scores appear in Google's leaderboard service, stored on Google servers and governed by Google's privacy policy.
四、权限使用说明
4. Permissions
- 网络权限（INTERNET）：用于加载应用内的第三方广告，以及在你主动登录后访问 Google Play 排行榜；不会传输你的游戏数据。
- 震动权限（VIBRATE）：用于游戏内的操作反馈（答对、答错、翻牌等震动提示）。你可随时在系统设置或应用内设置中关闭。
- 存储、位置、通讯录、相机、麦克风等敏感权限：本应用一律不申请。
- Internet (INTERNET): used to load third-party ads and, once you opt in, to access Google Play leaderboards. It never transmits your game data.
- Vibrate (VIBRATE): used for in-game haptic feedback (correct/wrong answers, card flips, etc.). You can disable it anytime in system or in-app settings.
- Sensitive permissions (storage, location, contacts, camera, microphone, etc.): none are requested.
五、第三方服务
5. Third-Party Services
本应用使用以下第三方服务：
- Google AdMob 广告服务（由 Google LLC 提供）：用于展示广告以维持应用免费运营。为展示广告，AdMob SDK 可能收集并使用设备广告标识符（Advertising ID）、设备型号与系统版本、网络状态、IP 地址等常规信息，用于广告投放、频次控制与效果统计。你可以随时在系统设置中"重置广告 ID"或关闭"个性化广告"，这不会影响本应用的其他功能。
- Google Play Games Services（由 Google LLC 提供）：仅在你主动登录后提供排行榜功能（详见第六节）。
上述信息的处理遵循 Google 隐私政策（policies.google.com/privacy）。应用商店分发平台（如 Google Play）可能出于平台运营目的收集的常规信息，与其各自的隐私政策有关。
The App uses the following third-party services:
- Google AdMob advertising service (provided by Google LLC): displays ads to keep the App free. To serve ads, the AdMob SDK may collect and use routine information such as the advertising ID, device model and OS version, network state, and IP address, for ad delivery, frequency capping, and performance measurement. You can reset your advertising ID or disable personalized ads anytime in system settings; this does not affect other features of the App.
- Google Play Games Services (provided by Google LLC): provides leaderboard features only after you voluntarily sign in (see Section 6).
Such data is handled according to Google's privacy policy (policies.google.com/privacy). Routine information collected by app stores (e.g., Google Play) for platform operation is governed by their own privacy policies.
六、排行榜与登录（可选）
6. Leaderboards & Sign-in (Optional)
排行榜功能完全可选：
- 你不登录即可使用全部本地训练功能；
- 首次使用排行榜需你主动点击"登录 Google Play"；登录后，App 在后续启动时会自动恢复登录会话（不弹窗、不打扰）。登录状态下，本应用仅读取你的 Google Play 游戏公开昵称用于排行榜展示，并在你打破个人纪录时上报成绩；
- 你可随时在应用内退出登录，之后本应用停止任何排行榜相关的网络活动；
- 登录凭据由 Google 官方 SDK 管理，本应用不读取、不存储你的账号密码。
Leaderboards are fully optional:
- You can use all local training features without signing in;
- To use leaderboards for the first time, you must actively tap "Sign in with Google Play". After signing in, the App automatically restores your session on subsequent launches (no pop-ups, no interruption). While signed in, the App only reads your public Google Play Games nickname for leaderboard display and submits scores when you beat your personal best;
- You can sign out anytime in the App; all leaderboard network activity then stops;
- Credentials are managed by Google's official SDK; the App never reads or stores your account password.
七、儿童隐私
7. Children's Privacy
本应用面向 13 岁及以上的普通用户，不针对 13 岁以下儿童提供服务。本应用不收集个人数据，且已按平台要求对儿童用户关闭个性化广告。
This app is intended for general users aged 13 and above and is not directed at children under 13. The App collects no personal data and disables personalized ads for children as required by platform policies.
八、政策变更
8. Changes to This Policy
如本隐私政策发生变更，我们将在本页面更新内容并标注新的更新日期。若未来本应用新增任何数据收集功能，我们会提前通过应用内说明或应用商店更新日志等方式告知。
If this policy changes, we will update this page and revise the date above. If the app ever adds any data collection feature, we will inform you in advance via in-app notices or store release notes.
九、联系我们
9. Contact Us
如你对本隐私政策有任何疑问，欢迎发送邮件至：455647783@qq.com。
If you have any questions about this policy, email us at 455647783@qq.com.