Developing a fitness app like Sweatcoin involves blending fitness tracking with rewards systems. Key steps include market research, defining core features like activity tracking, step conversion, and reward systems, and selecting the right technology stack. Incorporate GPS tracking, gamification elements, and secure payment gateways for seamless transactions. Integrate APIs for accurate data tracking and analytics to enhance user experience. Ensure the app is compatible with wearables for real-time tracking. Partnering with experts like Dev Technosys can help you build a scalable, user-friendly fitness app that motivates users to stay active while enjoying tangible rewards for their efforts.