** Opus Domini uses iCloud to share information across the different versions and devices. So in order to sync information between your different devices you will be needing to use a compatible combination of OS X and iOS. Otherwise your Mac will be storing information in one place and your iPad/iPhone will be storing the information in another, breaking the sync.
Compatible combinations are:
Macs running Mavericks will sync with iPads/iPhones running iOS 7 Macs running Yosemite will sync with iPads/iPhones running iOS 8
Our verdict: Good
= Opus Domini Mobile Pro has average ratings (3-star).
+ The app is currently free, instead of its regular price of $6.99.