Are there any apps/methods that would allow me to be filming on my iPhone while viewing the live footage on my iPad screen.

I’m doing some filming for a training project in work – filming me doing something in POV. I have a cheap and easy head mount that my phone sits in, and that’s all good – works perfectly.
BUT the problem is I keep accidentally cropping the view because I can’t see exactly what the camera is picking up and my head is moving.
Hoping there’s an app or way I can be filming on the iPhone but looking at the iPad to see where I’m at.
Cheers
View Reddit by AdamAtWorkAgain – View Source