Air fuel ratio gauge options

Evening- looking for info on a Bluetooth air fuel adapter to use my phone instead of a physical gauge.

what I also will accept is a gauge that can be plugged in when I want and removed for a show. I already have the bung in my head pipe for it. I just don’t like gauges hanging under my dash but love tuning with an air fuel gauge when ever possible.
Not really sure of my options other than hide it in the glove box but my aftermarket ac controls are there already.
Thanks in advance-
Syleng1