The app made me realize that I have several mental representations, depending on whether I read tabs or a score (low at bottom) or when shown by someone else (front view, low at top).
Guess it comes from teachers and bandmates showing me something on their guitar.
yeah, this came up before when the last time I posted to HN. It seems like a small minority of users are wired differently in how they perceive the fretboard layout :)
