Web apps can't send notifications when it's closed because it is not installed into the device as a software program, meaning it doesn't have enough access to do so. Plus you are closing it down so how is something that you close down supposed to work?
Technology can create or dimish occupations.
Technology can also make the job easier
The answer is PaaS (Platform as a Service)
PaaS provides users with a cloud runtime environment in which they can develop, test, manage, and deliver applications. Users are able to use a suite of pre-built tools to develop and test their own apps. Thanks to these solutions, developers are able to deploy applications without the need of infrastructures such as servers, operating systems, or development tools.
People earn income by getting jobs and working. When they work, they get paid. That's an income
Wow...that’s a long paragraph
