While the app is open, Speedometer uses your phone's GPS to read your current speed, position, accuracy, heading and satellite count. They are used to show your speed, check it against your speed limit, and calculate the distance, moving time, average speed and top speed of the current trip.

Your position is kept in memory only to work out the distance between two consecutive fixes, then discarded. It is never written to storage, and no route is recorded. Location stops when the app goes to the background or the screen is locked.

The only data saved on your device is: the start and end time, distance, moving time and top speed of each trip you end; the totals of the current trip; and your settings (speed unit, dial style, speed limit, alert options, HUD options and so on). This data is stored only in the app's private storage, and we have no access to it.

We do not collect any personally identifiable information, nor do we collect device identifiers or contacts. 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.

Trip records do not expire. You can view them in Trip history and delete them one by one.

You can save your trips as a CSV file in Settings → Export trips (CSV). The file is saved to a location you choose, and what you do with it is up to you.

Uninstalling the app or clearing its data in system settings deletes all trip records and settings.

Trip records and settings are included in the Android system backup to your own Google account, so they can be restored on a new phone or after reinstalling (depending on your backup settings). This is an Android system feature; we have no access to those backups.

Precise and approximate location: used to measure your speed with GPS while the app is open. Measuring speed requires precise location; with approximate location only, or without location, speed cannot be measured, but you can still view your trips and change settings. The app does not request background location.

Vibration: used to vibrate when you go over your speed limit. You can turn it off in Settings.

The app does not request internet, background location, camera, microphone, storage, contacts or notification permissions.

GPS speed may differ slightly from your vehicle's speedometer, and the signal depends on your surroundings, so it is for reference only. Always obey traffic laws, keep your eyes on the road and do not operate your phone while driving.

The app does not include any advertising, analytics or crash-reporting SDKs. It uses the phone's own GPS directly, not a third-party location service.

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 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].

车速表在您打开应用时使用手机的 GPS，读取实时的速度、位置、精度、方向和卫星数，用来显示当前速度、判断是否超速，并计算当前行程的距离、行驶时间、平均速度和最高速度。

位置只在内存中用于计算前后两次定位之间的距离，用完即丢弃，不写入存储，也不记录行驶路线。应用切到后台或锁屏后会停止定位。

保存在设备上的只有：每次结束的行程的开始和结束时间、距离、行驶时间和最高速度；正在进行的行程的合计；以及您的设置（速度单位、表盘样式、限速、提示方式、抬头显示等）。这些数据只保存在本应用的私有存储中，我们无法获取。

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、通讯录等数据。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。

行程记录没有自动过期时间，您可以在「行程记录」中查看，也可以逐条删除。

您可以在「设置 → 导出行程（CSV）」中把行程记录保存为 CSV 文件。文件保存到您自己选择的位置，之后如何使用由您决定。

卸载本应用或在系统设置中清除应用数据，会删除全部行程记录和设置。

行程记录和设置会随 Android 系统备份到您自己的 Google 账号，以便换机或重装后恢复（取决于您的系统备份设置）。这是 Android 系统提供的功能，我们无法访问这些备份数据。

精确位置和大致位置：用于在应用打开时通过 GPS 测量速度。测速需要精确位置；只允许大致位置或不允许时无法测速，但仍可查看行程记录和修改设置。本应用不申请后台位置权限。

振动：用于超速时振动提醒，可在设置中关闭。

本应用不申请网络、后台位置、相机、麦克风、存储、通讯录、通知等权限。

GPS 测出的速度可能与车辆仪表略有差别，信号受环境影响，仅供参考。请始终遵守交通法规，驾驶时注意路况，不要在行驶中操作手机。

本应用不集成任何广告、统计分析或崩溃上报等第三方 SDK，定位直接使用系统的 GPS，不使用第三方定位服务。

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）。

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。