Hi! I'm one of the founders of Grand Rapids Trampoline Academy in Grand Rapids, MI. We spent the first couple years trying to find a system that worked and then found Zeffy and everything became so much easier. We use zeffy for our competition entries, tickets, concessions… We are able to take donations easily at events and have a spot to direct people we meet who want to donate. I've found using the newsletter monthly makes everything cohesive. We now have other gyms starting to use zeffy as well and parents ask for it as an option for tickets.