I notice that some apps will only refresh whilst being open and have switchable 'permissions' which allow background refresh always/only when in use/never. Some apps only have two selectable permissions, always/never. One of my sat navs (Navigon doesn't, TomTom does) and the Around Me app have these minimal options and they use location even when closed and not in the app tray. This to me is wrong and they should ALL have the option to disable background activity unless the app is open in the background.