This app displays countdown timer with huge variety of options.
-Configure counter type: Days, Hours, Minutes
-Configure Show/Hide seconds (Only for Day counter)
-Configure Event Caption and Event Date/Time
-Only Event dates are supporter that do not require counter to use more than 2 digits. (For example, no more than 99 days in the future for day counter).
-Works both in SharePoint 2013 and SharePoint Online.
-No feature requirements.
-Supports IE 9+, Firefox (latest), Chrome(latest)