General :: Force Stopping Specific App Via Icon On Home Screen?

I've thought there might be a shell script I could run, maybe get an app that can run shell scripts from an icon on the home screen--but I don't know what that script would need to be, since it couldn't be about killing a process because that process ID is probably going to be different every time, and I don't know if it would require root. Rooting my phone is not an option.

I'm going to assume though that there's probably no answer to this and that I'll just have to keep going in by hand to force stop the app via prefs/apps/name-of-app/force stop. I just wish these app makers would have an exit option. Twitter and Vine and Growlr are examples of these programs with this kind of behavior. Facebook as well, but that'll just reload itself when you force quit it because it's a special "system app". I mean, I'm not expecting them to exit when I just go to the home screen, that would be silly, but I'd like SOME sort of option to close them besides going through the hassle of force stopping them via the OS preferences.

I want there to be NO chance whatsoever that these programs are going to access data in some way once I'm done using them. I have no problem with whatever the programs want to do when I WANT them running, but when I'm done using them, I want to be able to quit them, and it has nothing to do with wanting to have more free memory.