First let me say this looks like a great app!
New user here with a Korg Pa700 arranger, Amazon 10inch tablet and Galaxy S22.
The Amazon tablet which I use with the keyboard for sheet music (mobilesheets) detects the korg then freezes and crashes when connecting. Specifically on the midi input. Once I got the output to work,but the midi monitor showed no input. This tablet works fine sending midi from Mobilesheets. When I use the galaxy phone,all is well with the exception of detecting 7th chords which may be style specific.
That being said, your software seems to provide the ability to play Yamaha styles through a Korg Arranger. We lost that 2years ago when EMC software shut down, and I think it would be a hit with the Korg users. If you added the ability to save/export to a marker delimited midi file,(Korg specified the format in the manual) most Korg Arrangers can import that to a style. That would be worth ten times what you are charging for this wonderful app!