Random example: filesystem journaling so that you don't have to wait minutes to hours for fsck every time your computer hard resets. It showed up in Windows first -- but only in Windows Server. It was very intentionally excluded from consumer Windows. Then it showed up in Mac OS X. For a decade, hard restarts were painful on Windows and smooth on Mac. Finally, in Windows 8, just in time for SSDs to make it moot, it showed up in consumer Windows.
This story repeats over and over. Cameras and video chat out-of-the-box, backlit keyboards, desktop search, retained and GPU composited GUIs, Webkit, and so on. Apple wasn't first, but they were the first to do it well and get it in front of lots of people. People complain about apple users being sheep inside a bubble, but it goes both ways.
I'd answer your question more specifically, but I'm currently on the wrong side of the bubble in Android land. When I buy my next phone, I'll do my research, which will include swinging by an apple store to experience qualitative things like stylus/AR latency first-hand. You should too :)