See, my iPhone 4S lives inside a case just bulky enough that it won't fit in most docks. Consequently, I can't easily charge my phone or listen to music via one of the many speaker docks scattered around my house. I'd have to take the iPhone out of the case every time, and that's way too big a hassle.
So, what, am I supposed to switch to a smaller case? Or go with no case at all? (That's a gravity-powered disaster waiting to happen.) Help me, universe!
True to its name, this little adapter adds a little space between your case-ensconced dock connector and the dock itself, thus making it possible for an iPhone, iPod Touch, or even an iPad to get connected.