Network information: your phone's IP address, network prefix and gateway address on the current Wi-Fi, and the Wi-Fi name (SSID) if you grant location permission. This is used to determine what to scan and to keep history separate for each network. Without location permission, networks are told apart by gateway address and subnet.

Local device information: for other devices on the same local network found during a scan, their IP addresses, the names they broadcast or answer with (mDNS/Bonjour, NetBIOS, reverse DNS, UPnP descriptions), announced service types, and whether common ports are open. On Android 9 and earlier, where the system allows it, MAC addresses may also be read. This is used to list devices, guess device types and recognize the same device in later scans.

Information you enter: names you give devices and whether you mark them Trusted or Unknown.

Usage records: for each network, the time, online count and not-trusted count of the last 20 scans, plus when each device was first and last seen and how many times.

Settings: language, whether new-device notifications are on, and whether location permission was already requested.

All of this stays in the app's private storage to provide scanning and history. The app has no account system and we operate no server for it, so scan results and device names are not sent to us or to any third party. We do not collect your name, phone number, email, contacts, location, device identifiers or advertising ID.

A scan starts only when you tap Scan or the home-screen widget, and covers only the network your phone is currently connected to. On networks larger than 256 addresses, only the 256 addresses around your phone are scanned. The scan stops when the app leaves the foreground or Wi-Fi disconnects or changes.

Scanning attempts connections to common ports, sends reachability probes and name queries to addresses on your local network, and listens for mDNS and SSDP announcements. This traffic stays on your local network and does not pass through our servers. Please scan only networks you are allowed to use.

The app cannot block, disconnect or ban other devices, and does not change router settings. Device types are guesses based on names, services and ports and may be wrong.

Scan results and settings remain on your device until you delete them in the app, clear the app data or uninstall the app. Use Forget device on a device page, or Clear this network on a network page in History, to delete that device or all names, marks and scans for that network.

The current version allows Android system backup and device transfer: the database and settings may be backed up to your own Google account or moved to a new phone according to your system settings. This is an Android feature, and we cannot access system backups. The app has no file export.

Internet, network state and Wi-Fi state: used to check whether you are on Wi-Fi or using a VPN, read your address, subnet and gateway, and probe your local network.

Wi-Fi multicast: used to listen for names and services that devices announce over mDNS.

Location (approximate and precise, only while using the app): Android requires location permission for apps to read the Wi-Fi name. The app uses it only for that and does not read, store or upload your location. You can deny it and still scan. The app does not request background location.

Notifications (Android 13 and later ask you first): used only if you turn on new-device notifications, to send one notice after a scan you started finds a device never seen before. There are no background or marketing notifications.

The app does not request contacts, phone, SMS, camera, microphone, photo library or storage permissions. You can revoke permissions in system settings at any time.

The app contains no ads and offers no in-app purchases. It does not include advertising, analytics, crash-reporting, billing or social SDKs. Scanning, history, notifications and the widget use Android APIs and local app code.

The app is distributed through Google Play. Depending on your device and Google Play settings, Google may collect distribution or diagnostic information such as installs and crashes, governed by the Google Privacy Policy (https://policies.google.com/privacy). This is not actively uploaded by the app itself.

The app is not directed at children under 13 and does not knowingly request personal information from them. If a parent or guardian believes a child provided personal information without appropriate consent, please contact us.

We may update this policy when the app, the law or services change. The updated policy will be published on this page with a new effective date.

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

网络信息：您手机当前 Wi-Fi 的本机 IP 地址、网段前缀、网关地址，以及在您授予定位权限时的 Wi-Fi 名称（SSID）。用于确定扫描范围，并按网络分别保存历史。未授予定位权限时，网络改用网关地址和网段区分。

局域网设备信息：扫描时发现的同一局域网内其他设备的 IP 地址、它们自己广播或应答的名称（mDNS/Bonjour、NetBIOS、反向 DNS、UPnP 描述）、宣告的服务类型和常见端口是否开放；在 Android 9 及以下且系统允许时，还可能读取设备的 MAC 地址。这些信息用于显示设备列表、推测设备类型、在下次扫描时认出同一台设备。

您输入的信息：您给设备起的名称、标记的「信任」或「陌生」状态。

使用记录：每个网络最近 20 次扫描的时间、在线数量和未信任数量，以及每台设备首次、最近出现的时间和出现次数。

应用设置：语言、是否开启新设备通知、是否已询问过定位权限。

以上信息保存在本应用的私有存储中，用于提供扫描和历史功能。本应用没有账号体系，也没有开发者服务器，扫描结果和设备名称不会发送给我们或任何第三方。我们不收集您的姓名、手机号、邮箱、通讯录、位置、设备标识符或广告标识符。

扫描只在您点按「扫描」或桌面小组件时开始，只针对手机当前连接的 Wi-Fi 网段；网段大于 256 个地址时只扫描手机所在的 256 个地址。应用离开前台、Wi-Fi 断开或切换时扫描会停止。

扫描会向局域网内的地址发起常见端口的连接尝试、可达性探测和名称查询，并收听局域网内的 mDNS 与 SSDP 广播。这些通信只发生在您的局域网内，不经过我们的服务器。请只扫描您有权使用的网络。

本应用不能拦截、断开或拉黑其他设备，也不会修改路由器设置。设备类型是根据名称、服务和端口作出的推测，可能不准确。

扫描结果和设置会一直保存在您的设备上，直到您在应用中删除，或清除应用数据、卸载应用。您可以在设备详情中「忘记设备」，或在历史中「清除这个网络」，删除该设备或该网络下的全部名称、标记和扫描记录。

当前版本允许 Android 系统备份和设备迁移：数据库和设置可能按照您的系统设置备份到您自己的 Google 账号，或在换机时传输到新设备。这是 Android 系统提供的功能，开发者无法访问系统备份内容。本应用不提供导出文件功能。

网络、网络状态和 Wi-Fi 状态：用于判断是否连接 Wi-Fi、是否开启了 VPN，读取本机地址、网段和网关，并在局域网内进行探测。

Wi-Fi 多播：用于收听局域网内设备通过 mDNS 广播的名称和服务。

位置（大致和精确，仅在使用应用时）：Android 系统要求应用具有定位权限才能读取 Wi-Fi 名称。本应用只用它读取 Wi-Fi 名称，不读取、不保存、不上传您的位置。您可以拒绝，拒绝后照样可以扫描。本应用不申请后台定位。

通知（Android 13 及以上需您允许）：仅在您开启「新设备通知」后，于您主动发起的扫描完成并发现从未见过的设备时发出一条提醒。没有后台推送或营销通知。

本应用不申请通讯录、电话、短信、相机、麦克风、相册或存储权限。您可在系统设置中随时撤销权限。

本应用不包含广告，不提供应用内购买，不集成广告、统计分析、崩溃上报、结算或社交类第三方 SDK。扫描、历史、通知和小组件均使用 Android 系统 API 与应用本地代码完成。

本应用通过 Google Play 分发。根据您的设备和 Google Play 设置，Google 可能收集安装、崩溃等分发或诊断信息，相关处理适用 Google 隐私权政策（https://policies.google.com/privacy）。这些信息不是由本应用主动上传。

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。

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]。