Vivafit by Vivafit Lda is a free lifestyle application available on Android that allows you to book your fitness classes from your smartphone or tablet. With Vivafit, you can easily browse through the available classes, reserve your spot, and stay up-to-date with your fitness schedule. The app is available in English, Portuguese, Spanish, Bahasa Indonesian, Arabic, Traditional Chinese, and Russian.

The app's user interface is intuitive and easy to navigate, allowing you to quickly find the classes you're interested in. You can filter the classes by location, time, type, and instructor. Once you've found the class you want to attend, you can book your spot with just a few taps. You'll also receive notifications about your upcoming classes, so you never miss a session.

Overall, Vivafit is a great app for anyone who wants to stay fit and healthy. With its easy-to-use interface and convenient features, it makes booking fitness classes a breeze.