

So fucking what? He is not being paid in any kind, and anything he does on that project is volunteer work. If he was not able to do anything on that project due to regular work, vacation, personal issues, or the simple fact that he didn’t want to?
If you don’t pay for a service, you don’t get to decide what people do, deal with it
Yes, if the app would be any kind of official tool.
Yes, and that’s why regulations for those kinds of things exist, that prevent those things. There is no regulation for the ice tracker.
If down the road a regulation would happen for, app developer dude would be forced to either comply or to stop operations.