The new version of the Universalis app for the iPhone, iPad and iPod Touch has just been approved by Apple and it will be available for download within the next few hours. The new version works on iOS 6 and 7 only: if you are using an older version of iOS them you will not be offered the update and you can continue using the old version.
All the existing features are still there and some new ones have been added: notably, a night mode for people who like to read in the dark. The user interface has been made simpler and more logical. The new operating instructions are here.
BUG: If you use the United States calendar in parts of the USA where the Ascension is celebrated on a Sunday, the name of the calendar at the top of the calendar page is reported as “United States: Ascension on Thursday”. The calendar itself is correct: it is only the label that is wrong. We will correct this soon. Thanks to the alert user who reported this bug.