Docko

Docko turns your USB-C iPad into a sharp, low-latency monitor for anything with an HDMI output — game consoles, retro systems,
  cameras, mini PCs, streaming boxes and more. Plug a generic USB-C capture card into your iPad, connect HDMI, and your source appears
  on screen in real time.

  BUILT FOR LOW LATENCY
  Docko renders every frame the moment it arrives, using the most direct display path on iPadOS. Turn effects off for the fastest
  possible picture, or switch them on when you want it to look just right.

  RECORD AND CAPTURE
  Tap record to save video and audio straight to your Photos, or grab an instant screenshot. A recording indicator stays on screen the
  whole time, and everything you capture lands in the in-app gallery.

  REAL AUDIO PASSTHROUGH
  Hear your source through your iPad with low-latency USB audio. Adjust the volume or mute without touching the source device.

  MAKE IT LOOK RIGHT
  • Fit or Fill the screen to match any aspect ratio
  • Brightness, contrast and saturation controls
  • Picture filters rendered on the GPU with Metal
  • Picture in Picture — keep watching while you use other apps
  • Keep-awake so the screen never dims mid-session
  • Automatic hot-plug detection when you connect or swap a card

  WHAT YOU NEED
  • A USB-C iPad running iPadOS 18 or later
  • A generic USB-C UVC HDMI capture card (the plug-and-play kind that appears as a webcam)
  • An HDMI cable from your source device

  Note: UVC capture is only possible on a USB-C iPad. iPhones and older Lightning iPads can't read a capture card.