"Draw Something," a drawing game, is a good example.
It's designed for use with fingers, but the stylus makes it much easier to draw intelligible pictures, because it's easier to see what you're drawing.
By contrast, a finger is so big and blunt that it obscures the picture. The app would work even better if it sensed the pen pressure.
At the current level of software support, the stylus is just slightly better than a gimmick.
But even when there are more apps for it, the stylus is going to have limited appeal.
It's a must-have for only a small group of people, who like to doodle or need to do so for their jobs.
For the rest of us, it will be a fun thing we use once in a while. It can and should tip a purchase decision now and then, but not for everyone.
You can contrast that with the signature feature of the latest iPad: the ultra-high resolution screen.
That's not a must-have feature for everyone either, but it's immediately useful to everyone.
Image: Media blogger Christen Rochon poses for an artist as her image is drawn with a Samsung Galaxy Note 10.1 at a news conference on Wednesday, August 15, 2012 in New York.