Starting Android app development with a well-defined goal and awareness of device variety sets the foundation. Establishing the MVP, choosing an architecture, and mapping key user journeys early keeps the initial release targeted and minimizes later rework as the app expands.

Once the core is established, focus moves to a uniform UI, efficiency, and compatibility across different OS versions and display sizes. Robust state management, prudent networking, and dependable analytics/crash reporting simplify ongoing support and iteration after publishing on Google Play.