The Vatican's Pontifical Council for Social Communications has approved an iPhone app called iBreviary, which is apparently a virtual version of the liturgical book. The app itself was created by an iTalian (and yes, pun intended) priest, and during a trial release in Italy, was downloaded 10,000 times.
Now, the app has made it to the worldwide app store (in English, Spanish, French, and Latin, with Portugese and German coming in a later version), and is available for 74p (or 99 cents on the US store).
A while back, we heard about an iPhone saving a wedding, and who knows -- maybe this app will save a mass. If you've been looking to keep from having to carry a breviary and Apple's handset in your pocket, your day has come.