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

With the foundation established, focus moves to UI uniformity, performance, and compatibility across OS versions and devices. Robust state management, prudent networking, and trustworthy analytics/crash reporting simplify maintenance and iteration after the Google Play launch.