So, I assume this will work for the P3S also. You just connect to the phone via WiFi vs Lightning? And, you'd miss the ability to 'click' on the screen with the controller wheel. I can fly now without touching the screen, so not a deal breaker there. If I need to touch the screen, I could hover for a sec, slide out of the HooToos, press away, slide back in and be off again.
Sorry, Honey, I'm busy this weekend.
I would think so as long as you choose an app that works ok the Standard. FPV Camera does not. But there may be one that does. I'd dig around in the App Store and read the descriptions to see if there is one that specifies compatibility with the P3S