Privacy Policy EazySend

EazySend is a cross-platform peer-to-peer file transfer application for iOS, iPadOS, macOS, Windows, Android, and Linux. This privacy policy explains what information the app handles and, more importantly, what it does not.

1. Information We Do Not Collect

We want to be unambiguous about this, because file transfer apps have historically been a source of privacy concerns. EazySend does not collect any of the following:

• Your name, email address, phone number, or any other contact information
• The content of any files you send or receive
• File names, file sizes, or metadata about your transfers
• The IP addresses of devices you communicate with
• Your device identifier, advertising identifier, or any other persistent ID
• Your location (coarse or fine)
• Your browsing history, app usage patterns, or any behavioral data
• Crash reports or diagnostic logs sent to any server

The app has no backend user database. There is nothing for you to sign up for, and nothing for us to leak.

2. How EazySend Works

EazySend transfers files directly between devices using two modes:

2.1 Local Mode (LAN, default)

When both devices are on the same Wi-Fi network, files are transferred directly over the local network. No data passes through any server. The app uses UDP multicast on group 224.0.0.167 port 23317 to discover peer devices, and establishes a direct HTTPS connection over TLS for the actual transfer. Everything stays on your LAN.

2.2 Relay Mode (cross-network)

When the two devices are on different networks, the transfer is routed through our relay servers. Relay servers only forward encrypted binary streams between the two endpoints; they do not decrypt, inspect, log, or store any content. The relay does not know the file names, file sizes, sender or receiver identity. Connection metadata is kept only in memory for the duration of the transfer and discarded when the connection closes. No transfer logs are written to disk or sent anywhere.

3. Permissions We Request

The app requests a small number of system permissions, each for a specific and obvious purpose:

• Local Network (iOS/macOS) — Required to discover nearby devices on the same Wi-Fi network. Without this, LAN mode cannot work.
• Photos Library (iOS) — Required only when you choose to send a photo or video, or when you receive a photo and the app saves it to the system Photos app. The app never reads photos in the background.
• Files / Storage (all platforms) — Required to read files you choose to send and to save files you receive.
• Notifications (optional) — Used only to tell you that a transfer has completed or that someone wants to send you files.

No permission is used for any purpose other than the one stated above.

4. Data Retention

Since we do not collect any data, there is nothing to retain. Files you receive are stored in the normal system locations on your own device (iOS Photos library for images and videos, app Documents folder for other files; Downloads or user-selected folder on desktop platforms). You control them entirely.

5. Third-Party Services

EazySend does not embed any third-party analytics, advertising, crash reporting, or tracking SDK. The app does not communicate with any third-party service for any purpose. The relay servers are operated by the EazySend project itself and are the only network endpoints the app ever connects to (apart from the peer device you are transferring with).

6. Children's Privacy

EazySend does not knowingly collect any personal information from anyone, including children under 13. The app is suitable for all ages.

7. Security

All transfers are encrypted in transit using TLS 1.2 or higher. On the local network, each device generates its own ECDSA P-256 self-signed certificate at first launch; the certificate never leaves the device. In relay mode, the stream is end-to-end encrypted between the two devices and the relay server cannot decrypt it.

8. Changes to This Policy

If we ever update this policy, the new version will be published at the same URL with an updated "Last Updated" date. Since the app collects no data, there is very little that could change, but any modification will be clearly visible here.

9. Contact

If you have any questions about this policy or about how EazySend handles data, please contact: zhushaolong@gmail.com

EazySend 是一款跨平台点对点文件传输应用, 支持 iOS, iPadOS, macOS, Windows, Android 和 Linux. 本隐私政策说明 app 会处理哪些信息, 更重要的是, 它不会处理哪些信息.

一, 我们不收集的信息

我们希望把这一点说得毫不含糊. 文件传输类 app 历来是隐私问题的重灾区, EazySend 不收集以下任何内容:

• 你的姓名, 邮箱, 电话号码或任何其它联系方式
• 你发送或接收的任何文件内容
• 文件名, 文件大小, 或任何传输相关的元数据
• 与你通信的设备的 IP 地址
• 设备标识符, 广告标识符, 或任何其它持久化 ID
• 你的位置信息 (粗糙或精确的)
• 你的浏览记录, app 使用习惯, 或任何行为数据
• 发送到任何服务器的崩溃日志或诊断日志

App 后台没有任何用户数据库. 你不需要注册任何账号, 我们也没有任何可泄露的 数据.

二, EazySend 的工作方式

EazySend 通过两种模式在设备之间直接传输文件:

2.1 局域网模式 (默认)

当两台设备连接在同一个 Wi-Fi 网络时, 文件通过局域网直接传输. 数据完全不 经过任何服务器. App 在组播地址 224.0.0.167 端口 23317 发现附近设备, 然后通过 TLS 加密的 HTTPS 建立直连进行文件 传输. 所有数据全部留在你的局域网内.

2.2 中继模式 (跨网络)

当两台设备处于不同网络时, 传输通过我们的中继服务器进行. 中继服务器只在 两端之间转发加密的二进制流, 不解密, 不检查, 不记录, 不存储任何内容. 中继 不知道文件名, 文件大小, 发送方或接收方身份. 连接元数据只在传输期间保存在 内存中, 连接关闭后立即丢弃. 任何传输日志都不会被写入磁盘或发送到任何地方.

三, 申请的权限

App 只申请少量系统权限, 每一项都有明确的, 合理的用途:

• 本地网络权限 (iOS/macOS) — 用于发现同一个 Wi-Fi 下的 附近设备. 没有这个权限, 局域网模式无法工作.
• 照片库权限 (iOS) — 只在你主动选择发送照片/视频时, 或 接收到的照片需要保存到系统相册时才使用. App 不会在后台读取照片.
• 文件/存储权限 (所有平台) — 用于读取你选择发送的文件, 以及保存你接收到的文件.
• 通知权限 (可选) — 只用于告诉你传输完成, 或有人向你 发送文件.

每一个权限都只会用于上述目的, 不会挪作他用.

四, 数据保留

由于我们不收集任何数据, 也就不存在保留一说. 你接收到的文件保存在你自己 设备上的标准系统位置 (iOS 上的照片存入系统相册, 其它文件存入 app 的 Documents 目录; 桌面平台上存入下载目录或你指定的目录). 文件完全由你自己 控制.

五, 第三方服务

EazySend 不嵌入任何第三方统计, 广告, 崩溃报告或追踪 SDK. App 不会为任何 目的与任何第三方服务通信. 中继服务器由 EazySend 项目自己运维, 是 app 会 连接的唯一一种网络端点 (除了你正在传输文件的对端设备).

六, 儿童隐私

EazySend 不会在任何人知情或不知情的情况下收集个人信息, 包括 13 岁以下 的儿童. App 适合所有年龄段使用.

七, 安全

所有传输都通过 TLS 1.2 或更高版本加密. 在局域网模式下, 每台设备首次启动 时会生成自己的 ECDSA P-256 自签名证书, 证书从不离开设备. 在中继模式下, 数据 在两台设备之间是端到端加密的, 中继服务器无法解密.

八, 政策变更

如果我们更新此政策, 新版本会以同一个 URL 发布, 并更新 "最后更新" 日期. 由于 app 不收集任何数据, 这份政策几乎没有什么可改的, 但任何变动都会清晰 地展示在这里.

九, 联系方式

如果你对此政策或 EazySend 的数据处理方式有任何疑问, 请通过邮件联系: zhushaolong@gmail.com