Tool for using iPad as RealTime "Chalkboard" on MacOS?
The best tool I have found for this is the iPad app Notability (I am not affiliated, I am a math professor who is also giving all lectures on Zoom). When I share the screen in Zoom (on my Mac), I am able to select &quot;iPad over AirPlay&quot; as the source for the share.
Notability has a &quot;presentation mode&quot; where you can see the UI to select colors, tools, etc. but it broadcasts through the screen share with the UI hidden (in essentially real time). Zoom works really nice here, your video is broadcast on the side of your &quot;whiteboard&quot; surface.
Notability has some nice tools, and works really well with the pencil (I am using an older iPad pro with the first gen pencil). You can use it to simply draw, you can have it do shape recognition and clean up stuff like rectangles, circles, triangles, etc, options to do straight lines. I am using it for my math classes and like it a lot.