You can do this free using Quicktime: select the iPad as a camera source in Quicktime, and then share Quicktime app window. https://appleinsider.com/articles/1

You can do this free using Quicktime: select the iPad as a camera source in Quicktime, and then share Quicktime app window. https://appleinsider.com/articles/18/03/26/tip-record-your-ipads-screen-on-your-mac-with-quicktime-player https://appleinsider.com/articles/18/03/26/tip-record-your-i...