AndroidVirtualInput

port number is 3939
ip address can be gotten from ipconfig (make sure computer and andriod device are on the same network/ portforwarding is setup properly)
long press on button/ canvas to change settings
pressing buttons, gestures on the canvas(fling, double tap, single tap) sends macros
gestures only work with strict palm rejection

i recommend building in android studio although apk does exist under releases

optimised for tablet so i'm not sure how it works on a phone
server: https://github.com/road-pig/AndroidInputDriver