Cory Bohon / TUAW:
Grandialer, an iPhone app for GrandCentral  —  If you are one of the lucky ones who got in on the GrandCentral beta, then you might be interested in a new iPhone app that integrates with the GrandCentral service.  Grandialer (iTunes link) allows you to use your iPhone to call people using your GrandCentral telephone number.