TwomonUSB - Extended Display for iPhone

Overview

TwomonUSB lets you extend your PC desktop onto an iPhone or iPad, turning the mobile device into a second display. Created by DEVGURU Co. Ltd., the tool creates a wired dual-monitor arrangement between your computer and iOS gadget for extra screen space and productivity.

Notable benefits

• Reliable operation that does not rely on Wi‑Fi or other network connections, so the connection remains steady.
• Smooth motion rendering with support for up to 60 frames per second for fluid video and cursor movement.
• A simple way to add a purpose-built external screen without purchasing additional hardware.

Requirements and supported setups

• Running the Windows environment inside a virtual machine is supported when you install the app on that VM.
• Using a USB-based monitor that requires the DisplayLink driver is an accepted configuration.
• A PC with Windows 7 or newer and multiple display support (or multiple monitors connected) is necessary for standard extended-display functionality.
• The TwomonUSB companion program must be installed on your computer, and iTunes needs to be present for the iOS device to be recognized and used.

Making the mobile device your primary display

If you want the iPhone or iPad to become the main monitor at startup, configure Windows to sign in automatically so the external display can move to the desktop immediately. This typically involves enabling automatic login or removing the account password so the desktop loads without manual sign-in.

Alternative option

If you’re exploring other free choices, consider Paper by WeTransfer as an alternative tool for creative workflows and note-taking, though it serves different purposes than a true extended desktop.