I came across this site who randomize notes on the screen
https://random.bretpimentel.com/
really easy ; you go in option to choose the number of notes you want displayed on screen ; then you either can random it manually (by clicking on the note , by default) or with a timer ; so you check timer give a time and then just click on start timer and there you go you can work randomly on chords or whatever …
no revolution but so easy and free … so why not