not being snarky but maybe a pencil and a piece of paper is the easiest solution and just forget about the transpose and capo positions

if you're using a capo chances are you're not using terribly complex chords ( i know i play with a capo too) and after a bit of practice many years ago i learned to transpose on the fly if another guitarist was playing in different chord shapes and i needed to follow. or you could try - i'm not sure about this - using nashville chord notation if you are following the chord sheet