World Class Sib, developed by Оазис ПК, is a free Android application that aims to be your ultimate fitness companion. This lifestyle app falls under the Health & Fitness subcategory and offers a wide range of features to help you achieve your fitness goals.

With World Class Sib, you can easily check the schedule of group fitness classes, book your training sessions, and view your contract information. Additionally, the app allows you to earn bonuses, share your workouts with friends, and communicate with trainers.

The interface is intuitive, and the app is easy to navigate, making it a great option for users of all fitness levels. Overall, World Class Sib is a comprehensive fitness app that can help you stay motivated and achieve your fitness goals.