Now Scaler displays chords through C, D, E, F, G, A, and B.
Have you considered using Nashville notation for display, which is more convenient for input and understanding.
For example, in C major, I can remember
1- 5/7 - 6m -1/5
C - G/B - Am - C/G
But using Nashville notation is more convenient to remember and input.
If the two chord displays can be switched easily, I think it will be good.