A “mirror” app ! For example if I decide to make a flight from Dubai to Los Angeles >14h flight. I can start the flight early in the morning and then when I’m at school during a break I can see and controls all the basic features of my flight such as HDG/Altitude etc… Then it’ll be fun if I can create some conditions, for example ‘if’ turbulences = switch on seat belt sign.
You can also get ramp and layout charts in Preflight IF and LiveFlight. I’m using LF charts for the “Preflight” app, but if testing is successful there may be some real-world ones as well. Just depends on data reliability.
I am in no way affiliated with either IFSIM or Zello, I was simply answering a question. I suggest you read the rest of your thread to see many other apps being bought up. If you feel that strongly about it, I suggest you flag it as off-topic next time , instead of attempting to start an argument ;)
Back on topic - if you wish to discuss further, send me a PM!