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Privacy Policy

Diary Privacy Policy

Effective date: October 12, 2026

Thank you for using Diary. A diary is deeply personal, and we take your privacy seriously. This policy explains how the app handles information related to you.

Please read this policy before using the app. By using the app, you acknowledge that you have read and understood it.

In short

  • Your entries, moods and photos are stored only on your phone
  • The app has no internet permission; no account or sign-in is required, nothing is uploaded, and we cannot see your diary
  • You pick each photo in the system photo picker; the app does not read your photo library
  • Your passcode is stored only as a salted hash; fingerprint and face are checked by the system, and the app never receives biometric data
  • No data is shared with third parties; no advertising, analytics or crash-reporting SDKs

1. Information we process

Your entries: the title, text and mood you write, and the date and time of each entry.

Photos: the photos you select in the system photo picker are copied (scaled down to 2048 pixels on the long side, plus a thumbnail) into the app's private storage so they can be shown in your entries. The app can only access the photos you select, not the rest of your library. Metadata such as the location where a photo was taken is not kept in the copy.

App lock: if you turn on the app lock, your passcode and the recovery code are saved only as salted hashes and checked on your device; the passcode cannot be recovered from the hash. Fingerprint or face unlock is handled by Android; the app only receives whether the check succeeded.

Settings: text size, the daily reminder time, app lock options, the app language and so on.

All of this is stored only in the app's private storage. The app has no account system and does not request the internet permission, so it is technically unable to send any data to our servers, and we cannot see your diary. We do not collect any personally identifiable information, nor do we collect device identifiers, contacts or location.

2. How data is stored and deleted

Entries and photos do not expire. You can edit or delete them at any time. A deleted entry can be restored right away with Undo; after that, photo files that are no longer used are cleaned up automatically.

In Settings → Export backup you can save all entries and photos to a ZIP file, and in Export as text you can save them as a plain text file. The file is saved to a location you choose, and how you keep or share it is up to you. Backup files are not encrypted, so keep them safe. Importing a backup merges entries and never deletes the ones already on your phone.

You can also share a single entry as text to an app you choose.

Uninstalling the app or clearing its data in system settings deletes all entries, photos and settings permanently. Please export a backup now and then.

Entries and settings are included in the Android system backup to your own Google account (to keep it small, the cloud backup does not include photos; a direct device-to-device transfer does). Your passcode and app lock settings are never backed up. This is an Android system feature that depends on your backup settings; we have no access to those backups.

3. Permissions

Notifications: used for the daily writing reminder (requested on Android 13 and later when you turn the reminder on). The reminder is off by default and can be turned off at any time in Settings.

Run at startup: used to schedule the daily reminder again after the phone restarts, the app is updated, or the time or time zone changes. It has an effect only when the daily reminder is on.

Biometrics: used, when you turn on fingerprint or face unlock, to let the system check your fingerprint or face.

The app does not request internet, photo library (storage), camera, microphone, location, contacts or exact alarm permissions.

4. Security

The app lock keeps other people from opening the app on your phone. Your entries are not additionally encrypted; they are protected by Android's private app storage. If you forget your passcode, you can set a new one with the recovery code shown when you set the passcode. The recovery code is shown only once, so write it down and keep it safe. If both the passcode and the recovery code are lost, we cannot open the diary for you either.

With Block screenshots turned on, the app cannot be captured in screenshots or screen recordings, and its content is hidden in recent apps.

5. Third-party services

The app does not include any advertising, analytics or crash-reporting SDKs. It uses Android's own photo picker to choose photos and Android's biometric service for fingerprint and face unlock.

The app is distributed through Google Play. Depending on your device settings, Google may collect diagnostic information such as installs and crashes, which is governed by the Google Privacy Policy (https://policies.google.com/privacy).

6. Children's privacy

The app is not directed at children under 13, and it does not collect personal information from any user, including children.

7. Changes to this policy

We may update this policy when the app, the law or our operations change. The updated policy will be published on this page with a new effective date. If a new version materially changes how data is handled, we will notify you prominently in the app.

8. Contact us

If you have any questions or requests about this policy or your privacy, please contact us at [email protected].

Privacy Policy

日记隐私政策

生效日期:2026 年 10 月 12 日

欢迎使用日记(Diary)。日记是非常私人的内容,我们非常重视您的隐私和个人信息保护。本隐私政策说明本应用如何处理与您相关的信息。

请您在使用本应用前仔细阅读本隐私政策。您使用本应用,即表示您已了解并同意本隐私政策的内容。

简要说明

  • 您写的日记、选的心情和添加的照片只保存在您的手机上
  • 应用没有网络权限,无需注册或登录,数据不上传到任何服务器,我们看不到您的日记
  • 照片通过系统照片选择器由您逐张选择,应用不读取您的相册
  • 密码只保存加密哈希,指纹和面容由系统验证,应用拿不到生物特征数据
  • 不与任何第三方共享数据,不包含广告、统计或崩溃分析等第三方 SDK

一、我们处理的信息

日记内容:您写下的标题、正文、选择的心情,以及每篇日记的日期和时间。

照片:您在系统照片选择器中选中的照片,会复制一份(缩小到长边 2048 像素,另存一张缩略图)到本应用的私有存储,用来在日记中显示。应用只能拿到您选中的那几张照片,无法访问相册里的其他内容;复制时不保留照片里的拍摄地点等元数据。

应用锁:如果您开启应用锁,您设置的密码和系统生成的恢复码只以加盐哈希的形式保存,用来在本机校验,无法从哈希还原出密码。指纹或面容解锁由 Android 系统完成,应用只收到「验证通过」或「未通过」的结果。

设置:字号、每日提醒的时间、应用锁的选项、应用内语言等。

以上数据只保存在本应用的私有存储中。本应用没有账号体系,未申请网络权限,技术上无法把任何数据发送到我们的服务器,我们也无法查看您的日记。我们不收集任何能够识别您个人身份的信息,也不收集设备标识符、通讯录、位置等数据。

二、数据的保存与删除

日记和照片没有自动过期时间,您可以随时编辑或删除。删除的日记可以立即撤销;撤销期过后,不再使用的照片文件会被自动清理。

您可以在「设置 → 导出备份」中把全部日记和照片保存为一个 ZIP 文件,或在「导出为文本」中保存为纯文本文件;文件保存到您自己选择的位置,之后如何保管、分享由您决定。备份文件没有加密,请妥善保管。导入备份时按篇合并,不会删除您手机上已有的日记。

您也可以在日记页把单篇日记以文字形式分享到您选择的应用。

卸载本应用或在系统设置中清除应用数据,会删除全部日记、照片和设置,且无法恢复。请不时导出备份。

日记和设置会随 Android 系统备份到您自己的 Google 账号(为了控制大小,云备份不包含照片;换机时的设备间直接传输包含照片),密码和应用锁设置不会被备份。这是 Android 系统提供的功能,取决于您的系统备份设置,我们无法访问这些备份数据。

三、权限使用说明

通知:用于每日写日记提醒(Android 13 及以上会在您打开提醒时请求),提醒默认关闭,可随时在设置中关闭。

开机启动:开机、更新应用、修改时间或时区后重新登记每日提醒的时间,只在您打开了每日提醒时有作用。

生物识别:用于您开启「用指纹或面容解锁」后,由系统验证您的指纹或面容。

本应用不申请网络、相册(读取存储)、相机、麦克风、位置、通讯录、精确闹钟等权限。

四、安全说明

应用锁用于防止他人在您的手机上打开本应用查看日记,日记内容本身不额外加密,由 Android 的应用私有存储保护。忘记密码时可以用设置密码时显示的恢复码重新设置密码;恢复码只显示一次,请抄下来妥善保存。如果密码和恢复码都遗失,我们也无法帮您打开日记。

「禁止截屏」打开后,本应用的画面不能被截屏或录屏,最近任务中也不显示内容。

五、第三方服务

本应用不集成任何广告、统计分析或崩溃上报等第三方 SDK。照片选择使用 Android 系统的照片选择器,指纹和面容验证使用 Android 系统的生物识别服务。

本应用通过 Google Play 分发。Google 可能会根据您的设备设置收集应用安装、崩溃等诊断信息,相关处理适用 Google 隐私权政策(https://policies.google.com/privacy)。

六、儿童隐私

本应用不面向 13 周岁以下儿童,也不会收集任何用户(包括儿童)的个人信息。

七、政策更新

我们可能会根据产品功能、法律法规或运营需要更新本隐私政策。更新后,我们会在本页面发布新的隐私政策并更新生效日期。如新版本涉及数据处理方式的重大变化,我们会在应用内以显著方式提示。

八、联系我们

如果您对本隐私政策或个人信息保护有任何疑问、意见或请求,可以通过邮箱 [email protected] 联系我们。