Coronavirus forces people to stay at home. Many face these problems: how do I stay fit? How do I keep my weight? How do I remain active when gyms and fitness studios are closed? There is a solution: fitness apps. Fitness apps help both fitness businesses and their clients strive even during pandemic times. The number of fitness application users is growing. The market is expected to be worth USD 3.4 billion in 2020. Development of fitness apps has already become a hot topic. New apps are published on app stores to help users with their specific needs. This article will give an outlook on how to create a fitness app, on how fitness app development works and much more interesting information.