Downloadable mobile applications for organizing, scheduling, and calendaring the provision and delivery of food and drinks for groups of people, for sharing schedules among groups of people, for communicating with groups of people, for receiving reminder alerts regarding events, and for anonymously identifying allergies in groups of people; Downloadable mobile applications for sharing and combining multiple electronic calendars of different users; Downloadable mobile applications for organizing, scheduling, and calendaring the provision of food snacks for groups of children, anonymously identifying food allergies in groups of children, and communicating with groups of parents; Downloadable mobile applications for organizing, coordinating, communicating, and receiving reminder alerts regarding school events, community based events, volunteer events, team events, sporting events, member based events, social events, classes, business events and activities; Downloadable mobile applications for organizing, scheduling, communicating, and receiving reminder alerts regarding sporting events and tournaments; Downloadable mobile applications for accessing event information, organizing events, scheduling events, coordinating individual team and group activities, managing volunteers and participants, and communicating with users