Unfortunately no sense

Unfortunately, I have also hinweißen that such apps on Android have little sense.
Are the Apps killed, they still build their own business again in the background in memory and system on what operation by the previous Kill the app, the more battery needed, as they would simply continue to operate silently in the background.

Everyone who looks a little more intense with the matter Android that should know.
To reread is in various Android forums where also developers, programmers and more. hang around and share. (Android Help, xda ...)