Abstract: Mobile fitness applications are commonly used by people to keep their body health and fitness in good levels. These days, thousands of fitness applications can be downloaded from app stores. But these applications do not have the accuracy to be specific to everyone who is using the application. The purpose of this paper is to find ways to make fitness applications to be more specific to all users, increase their accuracy and discuss how to make a fitness application which can provide unique features to anyone who is using the application.