Hi Neil,
Most iPhones can record at 720p, 1080p and 4K. The Pavonine Software looks good on the surface, but I would question where your eyes are in relation to the lens. Can you make eye contact when reading the prompter on your laptop or desktop with either a built in camera or from a webcam?
If you boss is too close to the screen and camera his eyes will be way off.
Also what is the sound quality like?
With an iPhone, you can purchase an inexpensive lav microphone and plug it in through the lightning cable for clearer sound./
Greg Ball, President
Ball Media Innovations, Inc.
https://www.ballmediainnovations.com