Part of the iDo4U suite of applications, iSit4U is a great resource to help babysitters of all ages to keep up with and track information about families they babysit for. Keep emergency contact info, name and ages of children, allergies, medications, and other information close at hand and in one convenient location. Add babysitting jobs into the calendar from the application, and be able to share that calendar with your parents or anyone else who may need to know your schedule (requires iCloud calendars to be enabled). There is also a handy journaling feature that ties to each family.