Building an e-wallet app like Google Pay requires careful planning and integration of key features such as secure payment gateways, user authentication, peer-to-peer transfers, transaction history, and digital wallet management. The app should support multiple payment methods like credit/debit cards, bank accounts, and QR codes. Focus on ensuring data encryption and compliance with financial regulations for security. Additionally, a smooth and intuitive UI/UX design is essential for user engagement. By working with an experienced app development company like Dev Technosys, you can create a reliable, feature-rich, and scalable mobile wallet app that meets user expectations and industry standards.