Mobile App for Music Performance - 18/07/2023 13:12 EDT

I need an app that will allow musicians to receive written descriptions or pdf images of what to play at specified time intervals. The composer/conductor creates a score of directions for all the musicians. When the composer/conductor presses play the individual directions will be sent at the appropriate time intervals to the different musicians. I would like the app to work on iphone, ipad, and android. It would be desirable to be able to create the score file on a desktop mac if possible. The attached pdf shows a prototype score