What is role of weather apps in real life?

They're very useful if your'e working in an office building and don't come into contact with weather first-hand. They're also very good for giving you an idea of what's coming your way, so that if it's something that might keep you indoors for an extended period of time, you can stock up or take whatever precautions might be appropriate.

Here in Tornado Alley, weather apps are important in helping people be aware of a storm that has turned nasty, and alerting them to get to shelter. The same thing is true of areas where hurricanes hit; it's good to know as far in advance whether or not you're going to be affected, and how severe that effect might be.

Telling weather

They are really handy.