This work study how certain aspects of typography affects the usability and user experience (UX) of a fitness app. “PR” in the title refers to achieving a personal record in sports and fitness. Typography is a relatively unexplored subject within fitness apps even though it plays a major role in how users perceive the UX and usability. One highly recommended way to create and design for good UX is the implementation of gamification, meaning that features and elements originated from the gaming industry are woven into a non-gaming context to inspire and motivate users to work hard to achieve a set goal. In fitness apps, users likely come across gamification in features such as badges, achievements, and leaderboards. To study this matter, a hi-fi prototype was developed in InVision Studio and three different typefaces, one serif font, one sans-serif font, and one display font, were used in various contexts throughout the prototype. Two interviews and a usability test were conducted five times on five different study participants. The result shows that different aspects of typography indeed do have a big impact on UX and usability. The display font is a great choice to encourage users, and the sans-serif font is appreciated for body text. One unexpected finding is that according to the users, the s