Here’s a valuable iOS app to know: Air Chalk is easy to use. Download the Air Chalk app from App Store, connect your iOS device to an external display, and you are ready to go.
To draw your chalk board remotely, download Air Chalk to another iOS device, and run the app on both devices. The two devices will find each other, and you can use one to draw, and another to display.
If you wish to use your computer display (or a projector connected to the computer) as the chalk board, simply download and run the free Air Chalk server to your computer.
You can use Air Chalk with a number of ways: one iOS device, two paring iOS devices, or with a computer.
Go Air Chalk