Developing a swim training app like MySwimPro involves several key steps. First, thorough market research is essential to understand the needs of swimmers and coaches, identifying unique features that could differentiate your app from competitors. Next, focus on creating a user-friendly interface that caters to swimmers of all levels, offering customizable training plans, video tutorials, and performance tracking. Incorporating social features like community forums or integration with social media can enhance user engagement. Additionally, using wearable technology for real-time feedback can provide a competitive edge. Finally, ensure the app is scalable and secure, with regular updates based on user feedback to continually improve the user experience.