Thank you!
Yes, as you have found it is easy to reverse the controls when flying with a transmitter.
If possible, I recommend flying with a transmitter on the Android version too since it gives so much better control.
I presume that you are asking about the touch-screen controls - they can not be reversed. I think very few people will use this feature, in fact ou are the first one to request it. Out of curiosity may I ask why you fly with the yaw reversed?