Calculator offers scientific calculations, unit conversion and everyday calculators for loans, discounts, tips, percentages, dates, BMI, number bases and unit prices.

We do not collect any personally identifiable information, nor do we collect device identifiers, location, contacts or usage data. The app has no account system; all features work without signing in.

The app does not request the internet permission. It is technically unable to send the numbers you enter, your results or any other data to a server, and we have no access to them.

Calculation history: when you press "=", the expression and result are saved in the app's private storage (up to 200 entries) so you can review and reuse them. You can clear the history at any time.

Settings and state: the app language, thousands separator, decimal places, key vibration, degrees or radians, the memory value (M), an unfinished expression and your pinned units in the converter are also kept only in the app's private storage.

Numbers entered in the everyday tools (loan, discount, BMI, date and others) are kept only while you use them and are not added to the history. The height and weight used for BMI are calculated on your device and are never saved or sent.

This data may be backed up by Android to your own Google account; we have no access to those backups. Uninstalling the app or clearing its data in system settings deletes this data from your device.

The app requests no runtime permissions, and no internet, camera, location, contacts, phone, microphone or storage permissions.

Key vibration uses the system's haptic feedback, needs no vibration permission and follows your system haptics setting.

Quick Settings tile: if you add the Calculator tile to Quick Settings, tapping it only opens the app and reads no data.

When you long-press to copy a result, it is placed on the system clipboard, where other apps may read it according to system rules. The app never reads your clipboard.

The app does not include any advertising, analytics or crash-reporting SDKs.

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).

The BMI tool gives a reference result based on the World Health Organization (WHO) categories for adults. It is for general information only and is not medical advice or a diagnosis.

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

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.

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

计算器是一款计算工具，提供科学计算、单位换算，以及贷款、折扣、小费、百分比、日期、BMI、进制转换和单价比较等常用计算。

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、位置、通讯录、使用行为等数据。本应用没有账号体系，您无需注册或登录即可使用全部功能。

本应用未申请网络权限，技术上无法将您输入的数字、计算结果或任何数据发送到服务器，我们也无法访问这些内容。

计算历史：您按「=」得到的算式和结果会保存在应用的私有存储中（最多 200 条），方便您查看和重新编辑。您可以在「历史记录」中随时清空。

设置和状态：语言、千位分隔符、小数位数、按键振动、角度或弧度、记忆值（M）、上次未算完的算式、单位换算中常用（置顶）的单位等，同样只保存在应用的私有存储中。

生活工具（贷款、折扣、BMI、日期等）中输入的数字只在使用时临时保留，不会保存到历史记录。BMI 计算所需的身高、体重仅在设备上计算，不会保存或发送。

以上数据可能会通过 Android 系统的备份功能备份到您自己的 Google 账号，我们无法访问这些备份数据。卸载应用或在系统设置中清除应用数据，会删除设备上的这些数据。

本应用不申请任何运行时权限，也不申请网络、相机、位置、通讯录、电话、麦克风、存储等权限。

按键振动使用系统的触感反馈，不需要振动权限，并会遵循您在系统中的触感设置。

快捷设置磁贴：如果您把「计算器」磁贴添加到通知栏的快捷设置中，点按它只会打开本应用，不读取任何数据。

当您长按复制结果时，内容会放入系统剪贴板，其他应用可能按照系统规则读取剪贴板。本应用不会读取剪贴板中的内容。

本应用不集成任何广告、统计分析或崩溃上报等第三方 SDK。

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）。

BMI 工具按世界卫生组织（WHO）的成人分类给出参考结果，仅供一般参考，不构成医疗建议或诊断。

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。

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。

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。