The image above shows a bug in the analysis board with respect to promotion. I have just advanced a pawn to the last rank and promoted to queen, but the analysis board shows a pawn sitting on the square (e1=Q). This is in the iOS app.
Would you like to me added to the TestFlight program, which gives access to a beta version of the app, before it is pushed to everyone else? If you (or anyone else, for that matter) would like to help, then let me know.