What? Shift Sharer allows you to save your shifts to the cloud, then add friends/colleagues and see their shifts on your calendar automatically. When a friend adds a new shift, it appears instantly on your calendar.
You can choose to hide/show friends on the calendar and can also creates groups of different friends.
You’re even able to ask the app, “when are a set of friends all off?” The app will then list the days when these friends aren’t working, allowing you to plan events and holidays.
How? The app was built in native Objective-C and uses Parse to sync data and send push notifications.