It may not look like it on the surface, but this application, in a small way, is the sort of thing that seriously puts nails in the iPhone's coffin.
When I first heard about the InPulse I wondered how it could possibly work with the iPhone and as it turns out it can't, at least not without jailbreaking it, therefore rendering this sort of application "naughty" if not impossible.
As the novelty of the phone itself wears out the ability to integrate with other devices and use the hardware in new and innovative ways will be severely crippled on Apple's platforms due to the severe limits put on legitimate developers.
I'm excited to see that there is room for this sort of thing on other platforms and I can't wait to see other projects which exploit it.