Gympass is a flexible membership platform that offers access to numerous gyms and fitness studios around the world. It works by partnering with various fitness facilities which allow Gympass users to attend classes, use equipment, and access amenities at these locations. Users can search for participating gyms through the Gympass app or website, book classes, and track their workouts all in one place. The subscription model of Gympass allows users to try out different fitness options without having to commit to a single gym membership.