does what it says i guess
the app does let me show on my MBP whats being written/drawn on my iPad but a few small details to be aware of: get and have handy your ip address and you need to put it in including the last period (.) after the numbers. also, you can not use this in full screen so your desktop image, files, open windows will all be visible behind the white open window you are showing your work in - and it feels like it reduces the screen size for your audience (as well as looks a bit unprofessional). this app doesnt work with bluetooth either so you must have access to a wi-fi network. (which not all schools or offices permit you to have if youre only there to give a workshop right?) the colours and controls are basic and clear for me. with the ipad app that you also have to buy, it must be deleted and re-installed (you only pay once though) for the prompt to come back to re-pair with your laptop. also, the app within my MBP only prompts me to give an access code once per time i open the app so i have to quit and re-open to try again to make things work. these are all small things and, as i said, what i just downloaded and paid for works, just it could be better and tweaked a bit more for an easier user experience.
hope this review helps!
nibora about Show & Write It!, v1.1.1