Starting Android app development with a well-defined product objective and awareness of device variety sets the foundation. Outlining the MVP, choosing an architecture, and mapping key user journeys early helps keep the initial release tightly scoped and minimizes rework as the app expands.

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