Starting Android app development with a well-defined product objective and awareness of device variety sets the stage. Outlining the MVP, choosing an architecture, and mapping essential user journeys early keeps the initial release focused and lowers rework as the app expands.

Once the foundational layer is established, focus moves to cohesive UI, performance, and compatibility across OS versions and different screen sizes. Robust state management, prudent networking, and dependable analytics/crash reporting simplify maintenance and iteration after the Google Play launch.