GRADR is gym management software built from the ground up for Brazilian Jiu-Jitsu academies — not a generic fitness platform with a belt field bolted on. It connects the things a BJJ school actually runs on: a positional curriculum (guard, mount, stand-up) wired into the schedule, attendance that feeds grading, and belt-and-stripe promotions that can be gated on real criteria — sessions, time in grade, and attendance across curriculum areas — for both adult and kids programs.