Starting Android app development with a well-defined product goal and awareness of device fragmentation sets the stage. Outlining the MVP, choosing an architectural approach, and mapping key user journeys early helps keep the initial release focused and minimizes rework as the app expands.

Once the foundation is established, focus moves to UI consistency, performance, and compatibility across different OS versions and screen sizes. Robust state management, careful networking, and dependable analytics/crash reporting simplify maintenance and iteration after launching on Google Play.