In recent years there has been an increase in the use of mobile applications to assist in prescribing physical exercises and in communication between practitioners and cycling professionals, favoring remote work through digital platforms. Even so, many cycling apps have not been developed with a focus on user experience or based on guidelines found in the literature, which negatively impacts user engagement. This study aims to report the participatory design experience in developing a mobile application focused on cycling practice. The project involved the active participation of 2 researchers/practitioners in cycling with a degree in Physical Education, working in collaboration with computing professionals. The participatory design was used in defining the functionalities, ordering, designing the application screens, and in understanding the mathematical formulations to perform the performance calculation. The prototype generated in the Figma tool was subjected to heuristic evaluation, pointing out 29 usability problems. There are a number of technical terms in the field and protocols for performance evaluation that are not known to those who are not in the field. These factors can make it difficult or discouraging to use the application if they are not explained in the application. The experience highlighted the importance of the expert’s knowledge, opinions, and needs in creating an innovative and high-quality product in a restricted knowledge area.