Oxygen Fitness is a free Android app developed by Virtuagym Professional, designed to help users achieve their fitness goals and maintain a healthy lifestyle. The app requires an account, which can be created by sending an email or contacting the club's reception desk.

With Oxygen Fitness, users can easily access their club's class schedules and opening hours, track their daily fitness activities, input weight and other statistics, and monitor their progress. The app also includes over 2000 3D demonstrations and a variety of pre-made workouts, as well as the ability to create custom workouts. Additionally, users can earn over 150 achievements as they progress towards their goals.

Overall, Oxygen Fitness is a comprehensive personal trainer that provides motivation and support for users in their fitness journey. Whether in the gym or at home, users can find the workout that suits them best and track their fitness progress with ease.