Relay

Local file transfer between Windows and Android.

Relay sends files directly between your PC and your phone over the same Wi-Fi network or hotspot.
No cloud storage, No account, and No internet server in between.

Download for Windows Download for Android

Windows installer and Android APK, published as a GitHub Release with checksums included.

How Relay works

Three steps between opening the app and sending your first file.
All of it stays on your own network.

  1. Discover

    Open Relay on your PC and phone while they're on the same Wi-Fi network or hotspot. The Android app finds the desktop automatically, there's no IP address to type in.

  2. Pair

    Scan the QR code shown on the desktop. Relay asks you to approve the request on the PC before the phone is trusted, nothing connects without that confirmation.

  3. Transfer

    Send or receive files and folders directly between the two devices. Transfers move straight over the local network - no server or cloud storage sits in between.

See Relay in action

The desktop and Android apps side by side, both showing the same shared files.

Relay's Shared Files screen on Windows, listing a shared Vacation Photos folder and four shared documents, each with its size, type, source, and share date.
Desktop Files and folders shared from your PC, ready for your paired phone.
Relay's Shared Files screen on Android, showing the same shared folder and documents with a Download button next to each one.
Android The same shared files, ready to download onto your phone.

What you can do with Relay

The capabilities behind pairing and transferring, once two devices are connected.

Files and folders

Send a single file, several files at once, or a complete folder with nested subfolders included, arriving with the same structure you picked. Works the same way in both directions, PC to phone or phone to PC.

  • File transfer

    Send a single file directly to a paired device.

  • Folder transfer

    Nested folders arrive exactly as you picked them.

  • Multiple files

    Select several files and send them together.

  • Devices, handled

    Relay finds nearby devices automatically, no IP address to type in. Rename a device from Settings, and if a phone ever loses track of its paired PC — say, after a new network or a different hotspot just forget it and pair again without reinstalling the app.

  • Stays on your network

    Transfers move directly between your PC and phone over Wi-Fi or a mobile hotspot. Turn off network visibility from Settings any time you don't want your PC discoverable.

  • Shared files and history

    See what you've shared, track transfer progress, cancel a transfer in progress, and clear your history whenever you want a clean slate.

Download Relay

Relay v1.0.0 for Windows and Android.

Relay for Windows v1.0.0

Windows desktop application · installer

Download for Windows

Relay-Setup-1.0.0.exe · 119 MB

  1. Download the installer.
  2. Run the installer.
  3. Launch Relay.
  4. Pair it with the Android app.

Relay for Android v1.0.0

Direct APK download · no Play Store listing

Download for Android

Relay-1.0.0.apk · 95 MB

Android may ask you to allow installs from the source you used to download the APK — a normal step for an app installed outside Google Play. Play Protect may also scan the file before it installs.

Windows and Android downloads are published together as a GitHub Release, alongside a SHA256SUMS.txt checksum file for verifying what you downloaded. Releases on GitHub →

Requirements & compatibility

What you need to install and use Relay: a Windows PC, an Android phone, and one shared local network.

Windows

Windows 10 or 11, 64-bit

Installs per-user, no administrator rights required. Relay uses your local network to reach your phone; allow access if Windows Firewall asks.

Android

Android 8.0 or later

Installed directly from an APK, not from Google Play — you'll need to allow installs from the source you use to download it.

Network

Same Wi-Fi network or mobile hotspot

Windows and Android connect directly to each other. No cloud storage and no internet server sit in between.

Pairing

QR code scan, approved on the desktop

With both devices on the same network, Android scans a QR code shown by the desktop app, and desktop approves the connection before anything is trusted.

The Windows installer isn't code-signed yet, so Windows may show an “unrecognized publisher” warning the first time you run it. Relay is updated manually on both platforms, so download a newer version from this site and install it over the old one.