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 essential user journeys early helps maintain focus for the initial release and minimizes rework as the app scales.

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