BMCC 6k record trigger? Portkeys Keygrip?

Hi, I’m new here but hoping to find a decent record trigger solution for the BMCC 6k.
My Googling has found relatively few options. The one I’m trying to make work at the moment is connecting my BMCC 6k Bluetooth to a Portkeys Keygrip. I have not been able to connect them yet.
I had been unable to figure out how to have the Bluetooth of my 6k connect to anything, so I purchased the BMD Bluetooth+ app, which some people suggested. So far so good — it connect and provides some controls on the phone, including “record” (though in a way that wouldn't be useful in a run-and-gun scenario).
The BMD Bluetooth+ app advertises the ability to connect to external bluetooth-enable controllers like some Tilta controllers. It’s a $10 “Pro” add-on, so no biggie to bite the bullet and experiment… but has anyone here worked with the Portkeys Keygrip? Or know if the Bluetooth+ add-on is likely to connect to it?
Or does anyone have a better (or any) solution for a record trigger that can be mounted on the handgrip of a shoulder or somewhere more accessible than the camera body?
I’ve tried and failed with about three different trigger experiments..
Any help is much appreciated.
My Googling has found relatively few options. The one I’m trying to make work at the moment is connecting my BMCC 6k Bluetooth to a Portkeys Keygrip. I have not been able to connect them yet.
I had been unable to figure out how to have the Bluetooth of my 6k connect to anything, so I purchased the BMD Bluetooth+ app, which some people suggested. So far so good — it connect and provides some controls on the phone, including “record” (though in a way that wouldn't be useful in a run-and-gun scenario).
The BMD Bluetooth+ app advertises the ability to connect to external bluetooth-enable controllers like some Tilta controllers. It’s a $10 “Pro” add-on, so no biggie to bite the bullet and experiment… but has anyone here worked with the Portkeys Keygrip? Or know if the Bluetooth+ add-on is likely to connect to it?
Or does anyone have a better (or any) solution for a record trigger that can be mounted on the handgrip of a shoulder or somewhere more accessible than the camera body?
I’ve tried and failed with about three different trigger experiments..
Any help is much appreciated.