# iPad/iPhone as a second display for Mac by USB #

Yam Display turns your iPad/iPhone into an external monitor for your Mac.

Wired by USB, browse documents or watch videos without delay.

Touch your Mac and pinch to zoom on beautiful retina display.

For multitasking enabled iPads, you can utilize every single pixel of your screen in Split View.

Drag and Drop between iPad and Mac will make the workflow more continuous (Plus feature).

Yam Display is fast, secure, simple and will help you improve your productivity.

Key Features:
- Minimal lag for browsing or video playback
- Energy efficient for static screens
- Retina display
- 60 FPS / 30 FPS
- Split View (iOS 9 or later)
- Pinch to zoom / Rotate / Scroll / Drag
- Touch Bar simulation (for any Mac with macOS Sierra 10.12.2 or later)
- Smart/Bluetooth keyboard input from iOS device

Plus Features (In-App Purchase):
- Drag and Drop between iPad and Mac (iOS 11 or later)

System Requirements:
- iOS devices with iOS 7.1 or later
- Macs with macOS 10.9 or later

Download app for Mac from: (free)
For any questions or suggestions:

What’s New

Version 1.5.9

Bug fixes for Smart/Bluetooth keyboard input.

Ratings and Reviews

4.1 out of 5
30 Ratings

30 Ratings

Al-the-squirrel ,

Works great; Better than Duet

This app is great. It works just as you'd expect. Not all resolutions are equally responsive, so if you see people complaining about lag, know that tuning resolution can solve this. This lag is just a factor of the hardware limitations of the USB connection, something that will affect all apps like this in the same way.

I've also used Duet display, which is more expensive than Yam, but Yam is much better. Yam has more resolution options, moderately better performance, and support for split-screen multitasking on supported iPads, a great feature that Duet lacks.
If you don't need to use this with windows, I highly suggest Yam over Duet.

Joyalol ,


After trying both YAM and DUET, I finally paid for YAM and is really satisfied with its performance. YAM kick down DUET both in resolution and reliability at least with my 12.9’ iPad Pro, retina is supported and its price is acceptable, subtle lags when scrolling contents is no problem with as I often use external screen for reading static PDFs.

The only problem I have is when I turn on and off YAM several times, the main screen brightness would be changed to the highest level, which is a bit annoying, hope you guys could fixed it.

Anyway, thank you for providing us such a good app, it greatly improves comfort of my work flow!

Radical mothership ,

The missing link-solved! Great app

I needed an app that could use my older ipad as a second monitor on my MacBook Pro running Mojave. No other app I found would this. Also this app has a free trial version, so you can make sure it works on your setup before you buy. Clear instructions, easy setup, simple operation. You could not ask more from an app. I love it.


Yamstu Inc.
4.2 MB

Requires iOS 7.1 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, Japanese, Korean

Age Rating
In-App Purchases
  1. Drag and Drop


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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