Polar Beat App

I would like to use the Polar Beat App for tracking exercise heart rate.

Can I pair the H7 to the watch and the Polar beat app?

Can I view my heart rate in real time without having to do something to keep the display on?

Can I use the watch to track heart rate during exercise without the iPhone?

Or Can I use the internal optical heart rate from the watch and have it use the Polar Beat App on the phone or watch?

Does the watch broadcast heart rate via Bluetooth smart?

Any other heart rate monitoring suggestions would be appreciated too. I generally use the H7 and Polar Beat app for the iPhone but would like to only use the Apple watch and a chest strap for exercise heart rate tracking.

Alan