That could be done, but is not without problems. For example, Android 11 onwards do not allow to read user files, but instead you ‘import’ user file to RealDash private space in order to use it. iOS has a similar system.
So RealDash cannot in all cases check if user files have changed on the device.
Actually, let me take this opportunity to reveal what we have been working on into My RealDash that probably will help on this situation also:
My RealDash, new features - General / My RealDash - RealDash Forum