Open source · Free forever

Your iPad.
A second monitor.

Low-latency wireless display for Windows.
No subscription, no dongle.

Download for Windows View on GitHub
60fps H.264 Hardware Encode 120Hz ProMotion
<20ms latency
60fps stream
$0 cost
100% open source

How it works

Three steps. No drivers to install, no account to create.

1

Run the host

Launch EternalMonitor on your Windows PC. It captures your display with DXGI and encodes with hardware H.264 (NVIDIA, AMD, or Intel).

2

Connect your iPad

Open the iPad app and enter your PC's IP address. Both devices must be on the same WiFi network.

3

Start streaming

Your iPad is now a second display. Frames are streamed over UDP, decoded with VideoToolbox, and rendered with Metal.

Requirements

Windows

  • Windows 10/11 64-bit
  • NVIDIA, AMD, or Intel GPU (NVIDIA recommended for lowest latency)
  • Same WiFi network as iPad

iPad

  • iPadOS 16 or later
  • iPad Pro / Air / mini
  • 120Hz ProMotion supported
v0.1.2 Preview

v0.1.2 adds an on-demand extended display (via a bundled virtual display driver) and hardened multi-vendor encoding (NVIDIA/AMD/Intel). A first-party display driver, USB transport, and touch input are on the roadmap.

Roadmap

v0.1.0 Mirror
Done
v0.2.0 Extend + USB
Upcoming
v0.3.0 Touch input
Upcoming
v1.0.0 Full release
Upcoming