Mobile app development costs in India vary by complexity. A simple Android-only app with two to three features costs ₹1.5–₹3 lakh. A medium-complexity app with user authentication, payment integration, and an admin dashboard costs ₹4–₹8 lakh. A feature-rich app with real-time functionality, geolocation, social login, and multiple user roles costs ₹10–₹25 lakh. Using cross-platform development (Flutter or React Native) reduces cost by 25–35% compared to building separate native Android and iOS apps. Once the app launches, social media marketing is the highest-impact channel for driving app downloads among the Indian 18–35 audience.