Dear Ronald, thanjs for your answer. Sorry, may be I did not express well the question. I really don't care the positiin of buttons in the software or in hard real consolle. The user can adapt at what he gets. I just mean that inside the same software I expect the same position for deck A and deck B. Same position or symmetric position.
Instead, in my case (ver 3.0 + Android M), I find, from left to right:
Deck A, buttons 1, 2, 3
Deck B, buttons 3, 1, 2
Wich is not logic. In details, if on deck A the Sync button is at extreme left side, I would imagine that on deck B, Sync button should be placed at extreme left or extreme right, and not in the middle... just like it happens to me...
I hope I was clear in explaning... anyway thank you.
The software is great and I am having so much fun that makes me smiling more than djing on turntables