Fantastic

UPDATE:

The app lost Notification Centre support - now practically useless.

I LOVE this app, although I can completely see why people could have a lot of trouble with it.

In brief, the app allows you to use the URL schemes employed by both the OS itself, and by other apps, and put them in Notification Center to launch apps quickly. This can sound confusing, in part, because it is.

Some apps have URLs built into them so that various aspects of the app can be accessed quickly. For example, the Facebook app has fb: as the URL to launch the app. If you type fb: into the Address Bar in Safari, iOS will take you to the Facebook app, assuming it is installed. the iPhones settings app can be accessed by typing prefs: into the Address Bar.

A lot of research is needed to make this app work well, but many apps use the apps name with either a colon (:) or colon slash slash (://) as the URL to launch the app (Pulse news reader uses pulse: as its URL, for example). Googling them or going to the websites listed in the Switcher app (whose reviews you are reading right now) will help you find out if your favourite apps have URL schemes, and what they are.

If you are a "power" user, you will definitely want this app, and any "regular" user can figure it out with about 20 minutes. If you get good at understanding it, you will be able to activate Bluetooth and Airplane Mode with one tap in Notification Center.

Puphis about App Switcher, v1.2