Event information: titles, notes, dates, lunar or solar calendar choices, repeat rules, reminder times and strong-reminder options for events, birthdays and anniversaries. These are stored in an on-device database to display your calendar and schedule local reminders, and are included in the event backups described below.

App settings: language, display, reminder and other preferences are stored on your device to provide the corresponding features. The app does not require your name, phone number, email or an account, and does not send your event content or notes to Google as advertising request content.

Advertising information: Google AdMob and its advertising partners may process advertising ID, IP address (which can imply approximate location), device model and OS version, ad impressions and clicks, and diagnostic information for ad delivery, frequency control, measurement and fraud prevention. Personalization depends on applicable law and your consent choices.

We do not sell your event data. Local event backups, file services you choose, and Android system backup and device transfer are described separately below. No upload to developer-operated servers does not mean there are no advertising network requests or system cloud backups.

The event database is kept in Android private app storage, protected by system app isolation. Each event addition, edit or deletion requests an automatic backup; changes close together are combined. The default file is Download/ChinaCalendar/china_calendar_backup.json in public Downloads. It contains all events, notes, repeat rules, reminder settings and the backup timestamp, but not all app settings.

The local backup is plaintext JSON without additional encryption or password protection. People, file managers or authorized apps with access to the file may read it. Keep it safe and do not share it carelessly. Android 10 and later use MediaStore without broad storage permission; Android 9 and earlier require storage write permission. Missing permission, unavailable storage or write errors can prevent updates, so a successful backup after every change is not guaranteed.

Clearing app data or uninstalling deletes private app data but does not automatically delete existing backups in public Downloads. Recovery may therefore still be possible. After reinstallation or clearing data, Android 10 and later generally prevent direct access to a backup created by the previous installation. You can actively select a valid backup through the Android system file picker (SAF); the app also offers restoration when applicable. Restoration merges events, skips records with matching identity fields, registers reminders again and writes a new backup.

After a file-picker restore, if the filename matches the app backup naming pattern and Android grants persistent read/write access, the app remembers that file and prioritizes updating it during this installation. If access is lost, it falls back to the default location. If you choose a cloud drive or another document provider, storage, syncing and access also depend on that provider and your settings; the file is not necessarily stored only on your device.

The current Manifest allows system backup. Backup and data-extraction rules include the event database and its related database files in Android system cloud backup and device transfer. Depending on your device, system backup service and settings, Android may back up this data to your Google account or a supported backup service and restore it after reinstallation or a device change. This is separate from the local JSON backup in Download/ChinaCalendar. We cannot access your system backups or guarantee that the system will perform or successfully restore them.

You can delete events in the app; a later successful automatic backup updates the corresponding file. To remove every copy, also delete public backups and any saved or shared copies in your file manager, and manage cloud backups through the system or file-service settings. Uninstalling, clearing app data or deleting an event does not automatically erase those independent copies.

Notifications: used for local event, birthday and anniversary reminders; Android 13 and later require your permission.

Exact alarms: used to trigger reminders at your chosen times; Android 12/12L may require access in system settings. Full-screen notifications: used for the lock-screen alert only when you enable a strong reminder; display remains subject to system permissions and device restrictions.

Startup, time and time-zone changes: used to register reminders again and update calendar and widget content.

Storage write access: used only on Android 9 and earlier to create and update event backups in public Downloads. File-picker access is used to read the backup you select and, when the conditions above are met, continue updating that file.

Internet, network state and advertising ID: used for Google AdMob ad loading, display and measurement, and UMP consent updates. Core calendar and local reminders work offline. The app does not request permission to read your system calendar, contacts, location, photo library, microphone or camera.

You can manage applicable permissions in system settings. Denying notifications, alarm access or storage permission on older Android versions may affect the corresponding reminder or backup feature; it does not require you to register an account.

The app uses Google AdMob (Google LLC and its affiliates) for banner ads and Google User Messaging Platform (UMP) to update consent status and show a consent form when required by law and service configuration. Ad initialization and requests are allowed only after UMP reports that ads can be requested. Advertising and consent services still communicate over the network.

In applicable regions such as the EEA, UK and Switzerland, you can make advertising privacy choices using the form shown. When UMP requires privacy options, Privacy settings appears in the top-right menu on the app home screen so you can change your choices. Form and option availability depend on region, service configuration and existing consent status.

Advertising ID is a resettable system identifier, not a guarantee of anonymous processing. You can reset or delete it or manage ad personalization in Settings → Google → Ads or your device privacy settings. Deleting the ID or declining personalization does not stop all ads or all advertising-related data processing.

Google and its advertising partners process advertising information under their policies: Google Privacy Policy (https://policies.google.com/privacy) and partner information use (https://policies.google.com/technologies/partner-sites). Retention, international processing and deletion are governed by those services and applicable law.

Apart from the Google advertising and consent services above, the app does not include separate analytics, crash-reporting or social SDKs. Google Play distribution and Android system backup may also process distribution, diagnostic or backup information according to your device and service settings.

The local database is protected by Android private storage, but public backup files do not have the same private-app isolation and are not additionally encrypted. Protect your device unlock method and review the apps and services you authorize to access files.

Event titles, notes and reminder content may be visible in notifications, home-screen widgets or strong-reminder screens you enable. Adjust event reminders, system notifications and lock-screen settings to avoid exposing sensitive content on shared devices or a lock screen.

We cannot recover missing or damaged backups or delete data held by Google or your file provider on your behalf. Use the controls above for advertising choices and the relevant service settings for system backups and file copies.

The app is not directed at children under 13 and does not actively request personal information from them. Guardians who believe a child provided personal information without appropriate consent can contact us; requests concerning third-party advertising data can also be directed to the relevant privacy channels.

We may update this policy as features, laws or services change. New content and its effective date will be published on this page.

For questions, comments or requests about this policy or your privacy, contact Licheng Tech at [email protected].

日程信息：您输入的日程、生日、纪念日标题、备注、日期、农历或公历选项、重复规则、提醒时间及强提醒选项。这些信息保存在本机数据库中，用于展示日历和登记本地提醒，也包含在下述日程备份中。

应用设置：您选择的语言、显示和提醒等设置保存在设备上，用于提供相应功能。本应用不要求姓名、手机号、邮箱或登录账号，也不把日程和备注作为广告请求内容发送给 Google。

广告相关信息：Google AdMob 及其广告合作伙伴可能处理广告 ID、IP 地址（可用于推断大致位置）、设备型号与系统版本、广告展示和点击记录以及诊断信息，用于广告投放、频次控制、效果衡量和防范欺诈；个性化处理取决于适用法律和您的同意选择。

我们不出售您的日程数据。日程的本地备份、您主动选择的文件服务以及 Android 系统备份与设备迁移的处理方式分别见下文，不应将「不上传到开发者服务器」理解为没有广告网络请求或没有系统云备份。

日程数据库保存在 Android 应用私有存储中，由系统的应用隔离机制保护。应用在每次新增、修改或删除日程后自动请求备份，短时间连续改动会合并写入；默认文件为公共下载目录 Download/ChinaCalendar/china_calendar_backup.json，包含全部日程、备注、重复规则、提醒设置和备份时间，不包含全部应用设置。

本地备份是未额外加密的明文 JSON，不是密码保护的文件。能访问该文件的人员、文件管理器或获授权应用可能读取其中内容，请妥善保管，不要随意分享。Android 10 及以上通过 MediaStore 写入，无需广泛存储权限；Android 9 及以下需要存储写入权限。未授权、存储不可用或写入失败时，备份可能无法更新，不能保证每次改动都已备份。

清除应用数据或卸载会删除应用私有数据，但不会自动删除公共下载目录中已有的备份。因此数据并非必然无法恢复。重新安装或清除数据后，Android 10 及以上通常不允许应用直接读取原安装创建的备份，您可通过 Android 系统文件选择器（SAF）主动选择有效备份；应用也会在适用时提示恢复。恢复会合并日程并跳过身份字段相同的记录，重新登记提醒并再次写入备份。

通过文件选择器恢复后，如果文件名符合本应用备份命名且系统授予可持续的读写权限，应用会记住该文件，并在本次安装期间优先继续更新它；失去访问权限时改回默认目录。若您选择云盘等文件提供方，该文件的存储、同步和访问还受该提供方及您的设置控制，不等同于只保存在本机。

当前 Manifest 允许系统备份；备份和数据提取规则将日程数据库及其相关数据库文件纳入 Android 系统云备份与设备迁移。根据设备、系统备份服务和您的设置，系统可能将这些数据备份到您的 Google 账号或受支持的备份服务，并在重装或换机时恢复。此机制与 Download/ChinaCalendar 的本地 JSON 备份独立，开发者无法访问您的系统备份，也不能保证系统一定执行或恢复成功。

您可以在应用中删除日程；后续成功的自动备份会更新对应文件。若要删除所有副本，还需自行在文件管理器中删除公共备份、另存或分享的副本，并通过系统或文件服务设置管理云端备份。仅卸载、清除应用数据或删除一条日程，不会自动清除这些独立副本。

通知：用于您设置的日程、生日、纪念日等本地提醒；Android 13 及以上需您授权。

精确闹钟：用于按设定时间触发提醒；Android 12/12L 上可能需要在系统设置中允许。全屏通知：仅在您开启「强提醒」时请求锁屏提醒页面，是否显示仍受系统权限和设备限制影响。

开机启动及时间、时区变化：用于重新登记提醒和更新日历、小组件内容。

存储写入：仅在 Android 9 及以下用于在公共下载目录创建和更新日程备份。系统文件选择器授权仅用于读取您选择的备份，并在符合上述条件时继续更新该文件。

网络、网络状态及广告 ID：用于 Google AdMob 加载、展示和衡量广告及 UMP 更新同意状态；核心日历和本地提醒功能无需联网。本应用不申请读取系统日历、通讯录、位置、相册、麦克风或摄像头的权限。

您可在系统设置中管理适用权限；拒绝通知、闹钟或旧系统存储权限可能影响对应提醒或备份功能，不会因此要求您注册账号。

本应用使用 Google AdMob（Google LLC 及其关联公司）展示横幅广告，并使用 Google User Messaging Platform（UMP）更新同意状态，在法律及服务配置要求时展示同意表单。仅在 UMP 表示可以请求广告后初始化和请求广告；广告及同意服务仍会产生网络通信。

在欧洲经济区、英国、瑞士等适用地区，您可按显示的表单作出广告隐私选择；当 UMP 要求提供隐私选项时，应用首页右上角菜单会显示「隐私设置」以供修改。是否显示表单和选项取决于地区、服务配置及已有同意状态。

广告 ID 是系统提供的可重置标识符，不代表广告处理完全匿名。您可在「设置 → Google → 广告」或设备提供的隐私设置中重置、删除广告 ID 或管理广告个性化；删除广告 ID 或拒绝个性化不等于停止所有广告或所有广告相关数据处理。

Google 及其广告合作伙伴按其政策处理广告信息：Google 隐私权政策（https://policies.google.com/privacy）及合作伙伴信息使用说明（https://policies.google.com/technologies/partner-sites）。相关数据的保存、跨境处理和删除受这些服务的政策及适用法律约束。

除上述 Google 广告和同意服务外，本应用未接入独立的统计分析、崩溃上报或社交 SDK。Google Play 分发及 Android 系统备份也可能按您的设备和服务设置处理分发、诊断或备份信息。

本机数据库受 Android 私有存储保护，但公共备份不受同样的应用私有隔离保护，也没有额外加密。请保护设备解锁方式，并检查您授予文件访问权限的应用和服务。

日程标题、备注及提醒内容可能在通知、桌面小组件或您启用的强提醒页面中可见。您可调整日程提醒、系统通知和锁屏显示设置，避免在共享设备或锁屏上暴露敏感内容。

我们无法替您找回不存在或损坏的备份，也无法代替您删除 Google 或文件提供方持有的数据。相关广告选择请使用上述入口，系统备份和文件副本请在对应服务中管理。

本应用不面向 13 周岁以下儿童，也不主动向其索取个人信息。如果监护人发现儿童在未取得适当同意的情况下提供了个人信息，请联系我们；涉及第三方广告服务的信息也可通过其隐私渠道提出请求。

我们可能随功能、法律法规或服务变化更新本政策，并在本页面公布新内容及生效日期。

如果您对本隐私政策或个人信息保护有疑问、意见或请求，请联系礼乘科技（Licheng Tech）：[email protected]。