Objective: Leisure experiences play a significant role in individuals' lives. Accordingly, the current study aimed to determine the impact of physical activity application product features on improving young people's leisure experiences. Methods and Materials: This cross-sectional study was correlational. The research population included all youths in the northern and western areas of Tehran in 2021 who used the physical activity application (Samsung Health) on their mobile phones at least twice a week. The sample consisted of 410 individuals selected through purposive sampling and responded to personal information checklists and researcher-made questionnaires on physical activity application product features and leisure experiences. Data were analyzed using structural equation modeling in SPSS and SMART-PLS software. Findings: Results showed that physical activity application product features and all three of its components, including perceived dynamism, usefulness features, and pleasure-seeking features, had a direct and significant effect on young people's leisure experiences (P<0.05). Conclusion: The results indicate the effective role of physical activity application product features and all three of its components, including perceived dynamism, usefulness features, and pleasure-seeking features, in improving young people's leisure experiences.