GroupTick helps promoters manage their guests lists and ensure a real time tracking of attendees once the group arrives at the venue. With GroupTick promoters can create a group with group leaders information and send an invitation with a QRcode to the group leader. Group leader along with the guests can use this QRCode to check in which will be scanned by the hostess or security at the venue. This provides promoters and venues to accurately track guests attendance. GroupTick is also supplemented by a full featured web application for generating reports and viewing real time metrics for attendance.