This application is great, and really I would give it 5 stars if not for the terrible implementation of the page-turning animation. Please, your application needs to look like it belongs on an iPad. Look at the animations in Calendar and iBooks. It actually looks like you are turning a page there, and not some pseudo-3D hinge effect.
That said, the application makes praying the Liturgy of the Hours very simple. No need to fumble with a breviary, the liturgical calendar is at your fingertips, as is a great amount of information concerning the saints. Likewise, the new English translation of the order of Mass is very helpful.
Overall, a good app ... just fix that page turning and it would be beautiful.