it should still fix some issue Quartz Composer isn't event-based. You'll have to manage yourself the way you want to output things. If I understand well : you want to output a number on an event (keyboard or else, I guess) and keep it until the next event.
quartz composer view output: How can I get immediately the new values of outputs, if they change?
like below fixes the issue I wan't to draw a view which has several strings, these strings's text could be changed by my program code, how can I build my program with Quartz Composer? I want Quartz Composer define how my view looks. , Quartz Composer compositions are not supported at all on iOS.
Quartz composer alternative for iOS
By : dhirendra sharma
Date : March 29 2020, 07:55 AM
this will help To answer my own question. The only alternative I've found that is opengl shader builder by Apple which is not like quartz composer, but allows you to program and change running annimations or graphics - which will run on the iOS. The program, however, is not so easy to use compared to Apple standards.