radios on tablet solution

Hi there, i was thinking about using the tablet as the radio pedestal and been trying fsradiopanel

https://play.google.com/store/apps/details?id=com.tambucho.fsradiopanel&hl=es

which works pretty well with stock planes.

But with PMDG doesnt. Anyone knows how to make this applet work with the 737ngx??

Thanks.

Or any other applet for radios in tablet??

i was thinking about saitek radio panel but the knob problem seems to be a big one