Doubt - Simulation App Project

Guys, good afternoon.
I need help from experts on the subject.
I’m thinking of making a simulation app. This simulation would make the cell phone vibrate, emit an alert signal and a text appear on the screen. These can occur at a scheduled time or triggered by someone else.
For example: A person enters a certain place and after some time or triggered by a person, the phone vibrates, emits an alert signal and something like “Oxygen level above 21%” appears on the screen. This is all to simulate a dangerous environment, where the person perceives it, is forced to leave the place.
Question: Is it possible to do this in AppGyver??
If so, where can I find tutorials teaching how to do something similar?

Thanks for the help,