it does not support zapper, and this app is very poorly made, do not buy it I wasted my money so please do not waste yours.
Thanks for your comments. Are there any troubles with the game?
The music plays in background even while playing roms, the roms have screen issues with lines and such, emulation is horrible, the environments are ugly and not properly scaled, the android app doesn't work with usb controllers...
so lots of issues.