Zelos is a free Android application designed for calisthenics enthusiasts, allowing users to compete with athletes from around the globe. Utilizing an Elo rating system, it ranks athletes based on their push and pull static skills, facilitating a competitive environment. Users can participate in voting on athlete matchups, fostering community engagement and interaction.

The app features real-time tracking of global rankings, providing users with immediate feedback on their performance and standing. Zelos encourages athletes to showcase their skills and strive for improvement, creating a dynamic platform for fitness enthusiasts. With its focus on competition and community, Zelos serves as a motivating tool for individuals looking to push their limits in calisthenics.